1401866764 has 6 divisors (see below), whose sum is σ = 2453266844. Its totient is φ = 700933380.

The previous prime is 1401866761. The next prime is 1401866777. The reversal of 1401866764 is 4676681041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401866764.

It is not an unprimeable number, because it can be changed into a prime (1401866761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175233342 + ... + 175233349.

Almost surely, 2^1401866764 is an apocalyptic number.

It is an amenable number.

1401866764 is a deficient number, since it is larger than the sum of its proper divisors (1051400080).

1401866764 is a wasteful number, since it uses less digits than its factorization.

1401866764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350466695 (or 350466693 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 1401866764 is about 37441.5112408674. The cubic root of 1401866764 is about 1119.1859422569.

The spelling of 1401866764 in words is "one billion, four hundred one million, eight hundred sixty-six thousand, seven hundred sixty-four".