1013378561 has 8 divisors (see below), whose sum is σ = 1126535424. Its totient is φ = 905250960.

The previous prime is 1013378539. The next prime is 1013378573. The reversal of 1013378561 is 1658733101.

1013378561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1013378561 - 2¹⁸ = 1013116417 is a prime.

It is a super-2 number, since 2×1013378561² = 2053872215788861442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013378161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256891 + ... + 1257696.

It is an arithmetic number, because the mean of its divisors is an integer number (140816928).

Almost surely, 2^1013378561 is an apocalyptic number.

It is an amenable number.

1013378561 is a deficient number, since it is larger than the sum of its proper divisors (113156863).

1013378561 is a wasteful number, since it uses less digits than its factorization.

1013378561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514631.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1013378561 is about 31833.6074141779. The cubic root of 1013378561 is about 1004.4397795194.

The spelling of 1013378561 in words is "one billion, thirteen million, three hundred seventy-eight thousand, five hundred sixty-one".