371481813 has 12 divisors (see below), whose sum is σ = 551087628. Its totient is φ = 240960960.

The previous prime is 371481811. The next prime is 371481829. The reversal of 371481813 is 318184173.

It can be written as a sum of positive squares in 2 ways, for example, as 176544369 + 194937444 = 13287^2 + 13962^2 .

It is not a de Polignac number, because 371481813 - 2¹ = 371481811 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (371481811) 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, 557448 + ... + 558113.

It is an arithmetic number, because the mean of its divisors is an integer number (45923969).

Almost surely, 2^371481813 is an apocalyptic number.

It is an amenable number.

371481813 is a deficient number, since it is larger than the sum of its proper divisors (179605815).

371481813 is a wasteful number, since it uses less digits than its factorization.

371481813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115604 (or 1115601 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 371481813 is about 19273.8634684383. The cubic root of 371481813 is about 718.8625384666.

The spelling of 371481813 in words is "three hundred seventy-one million, four hundred eighty-one thousand, eight hundred thirteen".