1457638090 has 16 divisors (see below), whose sum is σ = 2629600200. Its totient is φ = 581754880.

The previous prime is 1457638079. The next prime is 1457638139. The reversal of 1457638090 is 908367541.

It can be written as a sum of positive squares in 4 ways, for example, as 1270851201 + 186786889 = 35649^2 + 13667^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157831 + ... + 166810.

Almost surely, 2^1457638090 is an apocalyptic number.

1457638090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1457638090 is a deficient number, since it is larger than the sum of its proper divisors (1171962110).

1457638090 is a wasteful number, since it uses less digits than its factorization.

1457638090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325097.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1457638090 is about 38179.0268341140. The cubic root of 1457638090 is about 1133.8351145020.

The spelling of 1457638090 in words is "one billion, four hundred fifty-seven million, six hundred thirty-eight thousand, ninety".