1487381940 has 480 divisors, whose sum is σ = 5620285440. Its totient is φ = 325036800.

The previous prime is 1487381939. The next prime is 1487381941. The reversal of 1487381940 is 491837841.

It is a happy number.

1487381940 is a `hidden beast` number, since 1 + 487 + 3 + 81 + 94 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1487381939) and next prime (1487381941).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487381941) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7787245 + ... + 7787435.

It is an arithmetic number, because the mean of its divisors is an integer number (11708928).

Almost surely, 2^1487381940 is an apocalyptic number.

1487381940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1487381940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2810142720).

1487381940 is an abundant number, since it is smaller than the sum of its proper divisors (4132903500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1487381940 is a wasteful number, since it uses less digits than its factorization.

1487381940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1487381940 is about 38566.5909823516. The cubic root of 1487381940 is about 1141.4954059502.

The spelling of 1487381940 in words is "one billion, four hundred eighty-seven million, three hundred eighty-one thousand, nine hundred forty".