1048837561 has 4 divisors (see below), whose sum is σ = 1049051392. Its totient is φ = 1048623732.

The previous prime is 1048837549. The next prime is 1048837579. The reversal of 1048837561 is 1657388401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1048837561 - 2⁵ = 1048837529 is a prime.

It is a super-2 number, since 2×1048837561² = 2200120458728857442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1048837541) 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, 99381 + ... + 109426.

It is an arithmetic number, because the mean of its divisors is an integer number (262262848).

Almost surely, 2^1048837561 is an apocalyptic number.

It is an amenable number.

1048837561 is a deficient number, since it is larger than the sum of its proper divisors (213831).

1048837561 is an equidigital number, since it uses as much as digits as its factorization.

1048837561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213830.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1048837561 is about 32385.7617017108. The cubic root of 1048837561 is about 1016.0211393420.

The spelling of 1048837561 in words is "one billion, forty-eight million, eight hundred thirty-seven thousand, five hundred sixty-one".