1490757433 has 4 divisors (see below), whose sum is σ = 1626280848. Its totient is φ = 1355234020.

The previous prime is 1490757427. The next prime is 1490757479. The reversal of 1490757433 is 3347570941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490757433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1490757433.

It is not an unprimeable number, because it can be changed into a prime (1490757403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67761691 + ... + 67761712.

It is an arithmetic number, because the mean of its divisors is an integer number (406570212).

Almost surely, 2^1490757433 is an apocalyptic number.

It is an amenable number.

1490757433 is a deficient number, since it is larger than the sum of its proper divisors (135523415).

1490757433 is a wasteful number, since it uses less digits than its factorization.

1490757433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135523414.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 1490757433 is about 38610.3280612843. The cubic root of 1490757433 is about 1142.3582640466.

The spelling of 1490757433 in words is "one billion, four hundred ninety million, seven hundred fifty-seven thousand, four hundred thirty-three".