1639397330 has 16 divisors (see below), whose sum is σ = 3106226880. Its totient is φ = 621245232.

The previous prime is 1639397327. The next prime is 1639397351. The reversal of 1639397330 is 337939361.

It is a super-2 number, since 2×1639397330² = 5375247211222257800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4314014 + ... + 4314393.

It is an arithmetic number, because the mean of its divisors is an integer number (194139180).

Almost surely, 2^1639397330 is an apocalyptic number.

1639397330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1639397330 is a deficient number, since it is larger than the sum of its proper divisors (1466829550).

1639397330 is a wasteful number, since it uses less digits than its factorization.

1639397330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8628433.

The product of its (nonzero) digits is 275562, while the sum is 44.

The square root of 1639397330 is about 40489.4718414553. The cubic root of 1639397330 is about 1179.1292364572.

The spelling of 1639397330 in words is "one billion, six hundred thirty-nine million, three hundred ninety-seven thousand, three hundred thirty".