1657452946 has 8 divisors (see below), whose sum is σ = 2493557820. Its totient is φ = 826267008.

The previous prime is 1657452919. The next prime is 1657452971. The reversal of 1657452946 is 6492547561.

It can be written as a sum of positive squares in 2 ways, for example, as 1492972321 + 164480625 = 38639^2 + 12825^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1657452946.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228891 + ... + 1230238.

Almost surely, 2^1657452946 is an apocalyptic number.

1657452946 is a deficient number, since it is larger than the sum of its proper divisors (836104874).

1657452946 is a wasteful number, since it uses less digits than its factorization.

1657452946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459468.

The product of its digits is 1814400, while the sum is 49.

The square root of 1657452946 is about 40711.8280847225. The cubic root of 1657452946 is about 1183.4422482748.

The spelling of 1657452946 in words is "one billion, six hundred fifty-seven million, four hundred fifty-two thousand, nine hundred forty-six".