131819492 has 24 divisors (see below), whose sum is σ = 277515840. Its totient is φ = 53520480.

The previous prime is 131819491. The next prime is 131819539. The reversal of 131819492 is 294918131.

It is a super-2 number, since 2×131819492² = 34752756942276128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (131819491) 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, 123359 + ... + 124422.

It is an arithmetic number, because the mean of its divisors is an integer number (11563160).

Almost surely, 2^131819492 is an apocalyptic number.

It is an amenable number.

131819492 is an abundant number, since it is smaller than the sum of its proper divisors (145696348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131819492 is a wasteful number, since it uses less digits than its factorization.

131819492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247811 (or 247809 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 131819492 is about 11481.2670032536. The cubic root of 131819492 is about 508.9321395862.

The spelling of 131819492 in words is "one hundred thirty-one million, eight hundred nineteen thousand, four hundred ninety-two".