1660151252 has 72 divisors (see below), whose sum is σ = 3175018560. Its totient is φ = 759162880.

The previous prime is 1660151243. The next prime is 1660151287. The reversal of 1660151252 is 2521510661.

It is a happy number.

It is a super-2 number, since 2×1660151252² = 5512204359034335008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9274499 + ... + 9274677.

It is an arithmetic number, because the mean of its divisors is an integer number (44097480).

Almost surely, 2^1660151252 is an apocalyptic number.

It is an amenable number.

1660151252 is a deficient number, since it is larger than the sum of its proper divisors (1514867308).

1660151252 is a wasteful number, since it uses less digits than its factorization.

1660151252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1660151252 is about 40744.9536998142. The cubic root of 1660151252 is about 1184.0841082279.

The spelling of 1660151252 in words is "one billion, six hundred sixty million, one hundred fifty-one thousand, two hundred fifty-two".