1457190661 has 2 divisors, whose sum is σ = 1457190662. Its totient is φ = 1457190660.

The previous prime is 1457190653. The next prime is 1457190667. The reversal of 1457190661 is 1660917541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1331885025 + 125305636 = 36495^2 + 11194^2 .

It is an emirp because it is prime and its reverse (1660917541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1457190661 - 2³ = 1457190653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1457190667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728595330 + 728595331.

It is an arithmetic number, because the mean of its divisors is an integer number (728595331).

Almost surely, 2^1457190661 is an apocalyptic number.

It is an amenable number.

1457190661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457190661 is an equidigital number, since it uses as much as digits as its factorization.

1457190661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1457190661 is about 38173.1667667224. The cubic root of 1457190661 is about 1133.7190905884.

The spelling of 1457190661 in words is "one billion, four hundred fifty-seven million, one hundred ninety thousand, six hundred sixty-one".