1401331864 has 16 divisors (see below), whose sum is σ = 2643619320. Its totient is φ = 696366720.

The previous prime is 1401331853. The next prime is 1401331889. The reversal of 1401331864 is 4681331041.

It is a congruent number.

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, 536017 + ... + 538624.

Almost surely, 2^1401331864 is an apocalyptic number.

It is an amenable number.

1401331864 is a deficient number, since it is larger than the sum of its proper divisors (1242287456).

1401331864 is a wasteful number, since it uses less digits than its factorization.

1401331864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074810 (or 1074806 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1401331864 is about 37434.3674181894. The cubic root of 1401331864 is about 1119.0435776296.

The spelling of 1401331864 in words is "one billion, four hundred one million, three hundred thirty-one thousand, eight hundred sixty-four".