813952745 has 16 divisors (see below), whose sum is σ = 988096320. Its totient is φ = 643621824.

The previous prime is 813952739. The next prime is 813952753. The reversal of 813952745 is 547259318.

It is a cyclic number.

It is not a de Polignac number, because 813952745 - 2⁴ = 813952729 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 813952696 and 813952705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278351 + ... + 281259.

It is an arithmetic number, because the mean of its divisors is an integer number (61756020).

Almost surely, 2^813952745 is an apocalyptic number.

It is an amenable number.

813952745 is a deficient number, since it is larger than the sum of its proper divisors (174143575).

813952745 is a wasteful number, since it uses less digits than its factorization.

813952745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544.

The product of its digits is 302400, while the sum is 44.

The square root of 813952745 is about 28529.8570799084. The cubic root of 813952745 is about 933.6836003218.

The spelling of 813952745 in words is "eight hundred thirteen million, nine hundred fifty-two thousand, seven hundred forty-five".