1490640031 has 8 divisors (see below), whose sum is σ = 1516855760. Its totient is φ = 1464645888.

The previous prime is 1490640023. The next prime is 1490640083. The reversal of 1490640031 is 1300460941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1490640031 - 2³ = 1490640023 is a prime.

It is a super-2 number, since 2×1490640031² = 4444015404039361922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490640001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41796 + ... + 68761.

It is an arithmetic number, because the mean of its divisors is an integer number (189606970).

Almost surely, 2^1490640031 is an apocalyptic number.

1490640031 is a deficient number, since it is larger than the sum of its proper divisors (26215729).

1490640031 is a wasteful number, since it uses less digits than its factorization.

1490640031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110793.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1490640031 is about 38608.8076868478. The cubic root of 1490640031 is about 1142.3282751155.

The spelling of 1490640031 in words is "one billion, four hundred ninety million, six hundred forty thousand, thirty-one".