1051070644 has 36 divisors (see below), whose sum is σ = 2008900236. Its totient is φ = 478338048.

The previous prime is 1051070641. The next prime is 1051070651. The reversal of 1051070644 is 4460701501.

It can be written as a sum of positive squares in 6 ways, for example, as 91929744 + 959140900 = 9588^2 + 30970^2 .

It is a super-2 number, since 2×1051070644² = 2209498997357149472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051070641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275212 + ... + 279004.

Almost surely, 2^1051070644 is an apocalyptic number.

It is an amenable number.

1051070644 is a deficient number, since it is larger than the sum of its proper divisors (957829592).

1051070644 is a wasteful number, since it uses less digits than its factorization.

1051070644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956 (or 3881 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1051070644 is about 32420.2196784661. The cubic root of 1051070644 is about 1016.7416993564.

The spelling of 1051070644 in words is "one billion, fifty-one million, seventy thousand, six hundred forty-four".