1051952409 has 12 divisors (see below), whose sum is σ = 1571883300. Its totient is φ = 677118624.

The previous prime is 1051952389. The next prime is 1051952413. The reversal of 1051952409 is 9042591501.

It can be written as a sum of positive squares in 2 ways, for example, as 440874009 + 611078400 = 20997^2 + 24720^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1051952409 is a prime.

It is a super-2 number, since 2×1051952409² = 2213207741601806562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051952479) 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, 2014974 + ... + 2015495.

It is an arithmetic number, because the mean of its divisors is an integer number (130990275).

Almost surely, 2^1051952409 is an apocalyptic number.

It is an amenable number.

1051952409 is a deficient number, since it is larger than the sum of its proper divisors (519930891).

1051952409 is a wasteful number, since it uses less digits than its factorization.

1051952409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030504 (or 4030501 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 1051952409 is about 32433.8158254622. The cubic root of 1051952409 is about 1017.0259417973.

The spelling of 1051952409 in words is "one billion, fifty-one million, nine hundred fifty-two thousand, four hundred nine".