1047893657 has 2 divisors, whose sum is σ = 1047893658. Its totient is φ = 1047893656.

The previous prime is 1047893641. The next prime is 1047893659. The reversal of 1047893657 is 7563987401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 798853696 + 249039961 = 28264^2 + 15781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047893657 - 2⁴ = 1047893641 is a prime.

It is a super-2 number, since 2×1047893657² = 2196162232761667298, which contains 22 as substring.

Together with 1047893659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1047893659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523946828 + 523946829.

It is an arithmetic number, because the mean of its divisors is an integer number (523946829).

Almost surely, 2^1047893657 is an apocalyptic number.

It is an amenable number.

1047893657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047893657 is an equidigital number, since it uses as much as digits as its factorization.

1047893657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1047893657 is about 32371.1855976886. The cubic root of 1047893657 is about 1015.7162576044.

The spelling of 1047893657 in words is "one billion, forty-seven million, eight hundred ninety-three thousand, six hundred fifty-seven".