1660157344 has 12 divisors (see below), whose sum is σ = 3268434834. Its totient is φ = 830078656.

The previous prime is 1660157341. The next prime is 1660157347. The reversal of 1660157344 is 4437510661.

It is an interprime number because it is at equal distance from previous prime (1660157341) and next prime (1660157347).

It can be written as a sum of positive squares in only one way, i.e., 1399657744 + 260499600 = 37412^2 + 16140^2 .

It is a super-2 number, since 2×1660157344² = 5512244813674268672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660157341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25939927 + ... + 25939990.

Almost surely, 2^1660157344 is an apocalyptic number.

It is an amenable number.

1660157344 is a deficient number, since it is larger than the sum of its proper divisors (1608277490).

1660157344 is an equidigital number, since it uses as much as digits as its factorization.

1660157344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51879927 (or 51879919 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1660157344 is about 40745.0284574695. The cubic root of 1660157344 is about 1184.0855565762.

The spelling of 1660157344 in words is "one billion, six hundred sixty million, one hundred fifty-seven thousand, three hundred forty-four".