1660157479 has 2 divisors, whose sum is σ = 1660157480. Its totient is φ = 1660157478.

The previous prime is 1660157431. The next prime is 1660157501. The reversal of 1660157479 is 9747510661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1660157479 - 2⁷ = 1660157351 is a prime.

It is a super-2 number, since 2×1660157479² = 5512245710159270882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660157419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830078739 + 830078740.

It is an arithmetic number, because the mean of its divisors is an integer number (830078740).

Almost surely, 2^1660157479 is an apocalyptic number.

1660157479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660157479 is an equidigital number, since it uses as much as digits as its factorization.

1660157479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 1660157479 is about 40745.0301141133. The cubic root of 1660157479 is about 1184.0855886718.

The spelling of 1660157479 in words is "one billion, six hundred sixty million, one hundred fifty-seven thousand, four hundred seventy-nine".