401838892052 has 24 divisors (see below), whose sum is σ = 777779647176. Its totient is φ = 180451559808.

The previous prime is 401838892043. The next prime is 401838892057. The reversal of 401838892052 is 250298838104.

It can be written as a sum of positive squares in 4 ways, for example, as 3180508816 + 398658383236 = 56396^2 + 631394^2 .

It is a super-2 number, since 2×401838892052² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401838892057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104426063 + ... + 104429910.

It is an arithmetic number, because the mean of its divisors is an integer number (32407485299).

Almost surely, 2^401838892052 is an apocalyptic number.

It is an amenable number.

401838892052 is a deficient number, since it is larger than the sum of its proper divisors (375940755124).

401838892052 is a wasteful number, since it uses less digits than its factorization.

401838892052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208856027 (or 208856025 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 401838892052 in words is "four hundred one billion, eight hundred thirty-eight million, eight hundred ninety-two thousand, fifty-two".