1657089330 has 32 divisors (see below), whose sum is σ = 4282939584. Its totient is φ = 407898816.

The previous prime is 1657089311. The next prime is 1657089353. The reversal of 1657089330 is 339807561.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124084 + ... + 2124863.

It is an arithmetic number, because the mean of its divisors is an integer number (133841862).

Almost surely, 2^1657089330 is an apocalyptic number.

1657089330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1657089330 is an abundant number, since it is smaller than the sum of its proper divisors (2625850254).

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

1657089330 is a wasteful number, since it uses less digits than its factorization.

1657089330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248970.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1657089330 is about 40707.3621105569. The cubic root of 1657089330 is about 1183.3556998131.

It can be divided in two parts, 165 and 7089330, that added together give a triangular number (7089495 = T₃₇₆₅).

The spelling of 1657089330 in words is "one billion, six hundred fifty-seven million, eighty-nine thousand, three hundred thirty".