1041642657 has 18 divisors (see below), whose sum is σ = 1653812706. Its totient is φ = 631297920.

The previous prime is 1041642631. The next prime is 1041642671. The reversal of 1041642657 is 7562461401.

1041642657 is a `hidden beast` number, since 1 + 0 + 4 + 1 + 642 + 6 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 856791441 + 184851216 = 29271^2 + 13596^2 .

It is not a de Polignac number, because 1041642657 - 2¹² = 1041638561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1041642457) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 477168 + ... + 479345.

Almost surely, 2^1041642657 is an apocalyptic number.

It is an amenable number.

1041642657 is a deficient number, since it is larger than the sum of its proper divisors (612170049).

1041642657 is a wasteful number, since it uses less digits than its factorization.

1041642657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956541 (or 956527 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1041642657 is about 32274.4892600952. The cubic root of 1041642657 is about 1013.6925441815.

The spelling of 1041642657 in words is "one billion, forty-one million, six hundred forty-two thousand, six hundred fifty-seven".