1640477530 has 32 divisors (see below), whose sum is σ = 3180653568. Its totient is φ = 607411200.

The previous prime is 1640477521. The next prime is 1640477549. The reversal of 1640477530 is 357740461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640477530.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 107911 + ... + 122170.

It is an arithmetic number, because the mean of its divisors is an integer number (99395424).

Almost surely, 2^1640477530 is an apocalyptic number.

1640477530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640477530 is a deficient number, since it is larger than the sum of its proper divisors (1540176038).

1640477530 is a wasteful number, since it uses less digits than its factorization.

1640477530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230142.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 1640477530 is about 40502.8089149382. The cubic root of 1640477530 is about 1179.3881559463.

The spelling of 1640477530 in words is "one billion, six hundred forty million, four hundred seventy-seven thousand, five hundred thirty".