1457699690 has 8 divisors (see below), whose sum is σ = 2623859460. Its totient is φ = 583079872.

The previous prime is 1457699623. The next prime is 1457699707. The reversal of 1457699690 is 969967541.

It can be written as a sum of positive squares in 2 ways, for example, as 1447117681 + 10582009 = 38041^2 + 3253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1457699690² = 4249776772452192200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72884975 + ... + 72884994.

Almost surely, 2^1457699690 is an apocalyptic number.

1457699690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1457699690 is a deficient number, since it is larger than the sum of its proper divisors (1166159770).

1457699690 is a wasteful number, since it uses less digits than its factorization.

1457699690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145769976.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 1457699690 is about 38179.8335512349. The cubic root of 1457699690 is about 1133.8510862899.

The spelling of 1457699690 in words is "one billion, four hundred fifty-seven million, six hundred ninety-nine thousand, six hundred ninety".