1571272663 has 2 divisors, whose sum is σ = 1571272664. Its totient is φ = 1571272662.

The previous prime is 1571272627. The next prime is 1571272667. The reversal of 1571272663 is 3662721751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1571272663 is a prime.

It is a super-2 number, since 2×1571272663² = 4937795562982223138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1571272667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 785636331 + 785636332.

It is an arithmetic number, because the mean of its divisors is an integer number (785636332).

Almost surely, 2^1571272663 is an apocalyptic number.

1571272663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1571272663 is an equidigital number, since it uses as much as digits as its factorization.

1571272663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 1571272663 is about 39639.2818174094. The cubic root of 1571272663 is about 1162.5648417680.

The spelling of 1571272663 in words is "one billion, five hundred seventy-one million, two hundred seventy-two thousand, six hundred sixty-three".