1672264261 has 4 divisors (see below), whose sum is σ = 1672388172. Its totient is φ = 1672140352.

The previous prime is 1672264229. The next prime is 1672264283. The reversal of 1672264261 is 1624622761.

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 1581652900 + 90611361 = 39770^2 + 9519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672264261 - 2⁵ = 1672264229 is a prime.

It is a super-2 number, since 2×1672264261² = 5592935517235752242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1672264261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672264201) 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, 38836 + ... + 69661.

It is an arithmetic number, because the mean of its divisors is an integer number (418097043).

Almost surely, 2^1672264261 is an apocalyptic number.

It is an amenable number.

1672264261 is a deficient number, since it is larger than the sum of its proper divisors (123911).

1672264261 is a wasteful number, since it uses less digits than its factorization.

1672264261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123910.

The product of its digits is 48384, while the sum is 37.

The square root of 1672264261 is about 40893.3278298551. The cubic root of 1672264261 is about 1186.9569546720.

The spelling of 1672264261 in words is "one billion, six hundred seventy-two million, two hundred sixty-four thousand, two hundred sixty-one".