1045130661 has 16 divisors (see below), whose sum is σ = 1574587200. Its totient is φ = 684943344.

The previous prime is 1045130659. The next prime is 1045130693. The reversal of 1045130661 is 1660315401.

It is not a de Polignac number, because 1045130661 - 2¹ = 1045130659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045130461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326446 + ... + 329631.

It is an arithmetic number, because the mean of its divisors is an integer number (98411700).

Almost surely, 2^1045130661 is an apocalyptic number.

It is an amenable number.

1045130661 is a deficient number, since it is larger than the sum of its proper divisors (529456539).

1045130661 is an equidigital number, since it uses as much as digits as its factorization.

1045130661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656145 (or 656139 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1045130661 is about 32328.4806478746. The cubic root of 1045130661 is about 1014.8227540403.

The spelling of 1045130661 in words is "one billion, forty-five million, one hundred thirty thousand, six hundred sixty-one".