437189013 has 12 divisors (see below), whose sum is σ = 641848428. Its totient is φ = 286680960.

The previous prime is 437188987. The next prime is 437189021. The reversal of 437189013 is 310981734.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111133764 + 326055249 = 10542^2 + 18057^2 .

It is not a de Polignac number, because 437189013 - 2⁸ = 437188757 is a prime.

It is a super-2 number, since 2×437189013² = 382268466175828338, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (437189023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397620 + ... + 398717.

It is an arithmetic number, because the mean of its divisors is an integer number (53487369).

Almost surely, 2^437189013 is an apocalyptic number.

It is an amenable number.

437189013 is a deficient number, since it is larger than the sum of its proper divisors (204659415).

437189013 is a wasteful number, since it uses less digits than its factorization.

437189013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796404 (or 796401 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 437189013 is about 20909.0653306168. The cubic root of 437189013 is about 758.9673261047.

The spelling of 437189013 in words is "four hundred thirty-seven million, one hundred eighty-nine thousand, thirteen".