1495987740 has 72 divisors (see below), whose sum is σ = 4886900928. Its totient is φ = 368242560.

The previous prime is 1495987733. The next prime is 1495987747. The reversal of 1495987740 is 477895941.

1495987740 is a `hidden beast` number, since 1 + 4 + 9 + 598 + 7 + 7 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1495987733) and next prime (1495987747).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1495987747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317316 + ... + 321995.

It is an arithmetic number, because the mean of its divisors is an integer number (67873624).

Almost surely, 2^1495987740 is an apocalyptic number.

1495987740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1495987740 is an abundant number, since it is smaller than the sum of its proper divisors (3390913188).

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

1495987740 is a wasteful number, since it uses less digits than its factorization.

1495987740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639339 (or 639334 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The square root of 1495987740 is about 38678.0007239257. Note that the first 3 decimals coincide. The cubic root of 1495987740 is about 1143.6926886986.

The spelling of 1495987740 in words is "one billion, four hundred ninety-five million, nine hundred eighty-seven thousand, seven hundred forty".