131898445 has 48 divisors (see below), whose sum is σ = 195022080. Its totient is φ = 85214976.

The previous prime is 131898439. The next prime is 131898463. The reversal of 131898445 is 544898131.

It is not a de Polignac number, because 131898445 - 2⁵ = 131898413 is a prime.

It is a super-4 number, since 4×131898445⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 501384 + ... + 501646.

It is an arithmetic number, because the mean of its divisors is an integer number (4062960).

Almost surely, 2^131898445 is an apocalyptic number.

It is an amenable number.

131898445 is a deficient number, since it is larger than the sum of its proper divisors (63123635).

131898445 is a wasteful number, since it uses less digits than its factorization.

131898445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 387 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 131898445 is about 11484.7048285970. The cubic root of 131898445 is about 509.0337272423.

The spelling of 131898445 in words is "one hundred thirty-one million, eight hundred ninety-eight thousand, four hundred forty-five".