1400641064 has 32 divisors (see below), whose sum is σ = 2695614240. Its totient is φ = 681912000.

The previous prime is 1400641049. The next prime is 1400641091. The reversal of 1400641064 is 4601460041.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107714 + ... + 120014.

It is an arithmetic number, because the mean of its divisors is an integer number (84237945).

Almost surely, 2^1400641064 is an apocalyptic number.

It is an amenable number.

1400641064 is a deficient number, since it is larger than the sum of its proper divisors (1294973176).

1400641064 is a wasteful number, since it uses less digits than its factorization.

1400641064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12681 (or 12677 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1400641064 is about 37425.1394653380. The cubic root of 1400641064 is about 1118.8596663133.

The spelling of 1400641064 in words is "one billion, four hundred million, six hundred forty-one thousand, sixty-four".