1401838808 has 16 divisors (see below), whose sum is σ = 2632717080. Its totient is φ = 699780928.

The previous prime is 1401838807. The next prime is 1401838811. The reversal of 1401838808 is 8088381041.

It is a super-2 number, since 2×1401838808² = 3930304087229721728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401838807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137066 + ... + 146937.

Almost surely, 2^1401838808 is an apocalyptic number.

It is an amenable number.

1401838808 is a deficient number, since it is larger than the sum of its proper divisors (1230878272).

1401838808 is a wasteful number, since it uses less digits than its factorization.

1401838808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284626 (or 284622 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 1401838808 is about 37441.1379100582. The cubic root of 1401838808 is about 1119.1785026126.

The spelling of 1401838808 in words is "one billion, four hundred one million, eight hundred thirty-eight thousand, eight hundred eight".