1052913661 has 4 divisors (see below), whose sum is σ = 1078594524. Its totient is φ = 1027232800.

The previous prime is 1052913629. The next prime is 1052913677. The reversal of 1052913661 is 1663192501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177049636 + 875864025 = 13306^2 + 29595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052913661 - 2⁵ = 1052913629 is a prime.

It is a super-2 number, since 2×1052913661² = 2217254355040845842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052913361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12840370 + ... + 12840451.

It is an arithmetic number, because the mean of its divisors is an integer number (269648631).

Almost surely, 2^1052913661 is an apocalyptic number.

It is an amenable number.

1052913661 is a deficient number, since it is larger than the sum of its proper divisors (25680863).

1052913661 is an equidigital number, since it uses as much as digits as its factorization.

1052913661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25680862.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1052913661 is about 32448.6311113427. The cubic root of 1052913661 is about 1017.3356264648.

The spelling of 1052913661 in words is "one billion, fifty-two million, nine hundred thirteen thousand, six hundred sixty-one".