1691400264 has 16 divisors (see below), whose sum is σ = 4228500720. Its totient is φ = 563800080.

The previous prime is 1691400247. The next prime is 1691400283. The reversal of 1691400264 is 4620041961.

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, 35237482 + ... + 35237529.

It is an arithmetic number, because the mean of its divisors is an integer number (264281295).

Almost surely, 2^1691400264 is an apocalyptic number.

It is an amenable number.

1691400264 is an abundant number, since it is smaller than the sum of its proper divisors (2537100456).

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

1691400264 is a wasteful number, since it uses less digits than its factorization.

1691400264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70475020 (or 70475016 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1691400264 is about 41126.6369157508. The cubic root of 1691400264 is about 1191.4673103669.

The spelling of 1691400264 in words is "one billion, six hundred ninety-one million, four hundred thousand, two hundred sixty-four".