1664288274 has 32 divisors (see below), whose sum is σ = 3636763200. Its totient is φ = 503553600.

The previous prime is 1664288243. The next prime is 1664288281. The reversal of 1664288274 is 4728824661.

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, 24552 + ... + 62700.

It is an arithmetic number, because the mean of its divisors is an integer number (113648850).

Almost surely, 2^1664288274 is an apocalyptic number.

1664288274 is an abundant number, since it is smaller than the sum of its proper divisors (1972474926).

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

1664288274 is a wasteful number, since it uses less digits than its factorization.

1664288274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38826.

The product of its digits is 1032192, while the sum is 48.

The square root of 1664288274 is about 40795.6894046418. The cubic root of 1664288274 is about 1185.0668537475.

The spelling of 1664288274 in words is "one billion, six hundred sixty-four million, two hundred eighty-eight thousand, two hundred seventy-four".