381245490 has 24 divisors (see below), whose sum is σ = 991238508. Its totient is φ = 101665440.

The previous prime is 381245479. The next prime is 381245497. The reversal of 381245490 is 94542183.

It can be written as a sum of positive squares in 2 ways, for example, as 379197729 + 2047761 = 19473^2 + 1431^2 .

It is not an unprimeable number, because it can be changed into a prime (381245497) 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, 2117941 + ... + 2118120.

Almost surely, 2^381245490 is an apocalyptic number.

381245490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381245490 is an abundant number, since it is smaller than the sum of its proper divisors (609993018).

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

381245490 is a wasteful number, since it uses less digits than its factorization.

381245490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236074 (or 4236071 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 381245490 is about 19525.5087001594. The cubic root of 381245490 is about 725.1061216041.

The spelling of 381245490 in words is "three hundred eighty-one million, two hundred forty-five thousand, four hundred ninety".