1497490740 has 120 divisors (see below), whose sum is σ = 4714551072. Its totient is φ = 397897920.

The previous prime is 1497490717. The next prime is 1497490759. The reversal of 1497490740 is 470947941.

1497490740 is a `hidden beast` number, since 1 + 4 + 97 + 490 + 74 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 495835 + ... + 498845.

Almost surely, 2^1497490740 is an apocalyptic number.

1497490740 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 1497490740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357275536).

1497490740 is an abundant number, since it is smaller than the sum of its proper divisors (3217060332).

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

1497490740 is a wasteful number, since it uses less digits than its factorization.

1497490740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3328 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1497490740 is about 38697.4254957613. The cubic root of 1497490740 is about 1144.0755783687.

The spelling of 1497490740 in words is "one billion, four hundred ninety-seven million, four hundred ninety thousand, seven hundred forty".