881798513 has 4 divisors (see below), whose sum is σ = 884936868. Its totient is φ = 878660160.

The previous prime is 881798509. The next prime is 881798527. The reversal of 881798513 is 315897188.

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 383258929 + 498539584 = 19577^2 + 22328^2 .

It is a cyclic number.

It is not a de Polignac number, because 881798513 - 2² = 881798509 is a prime.

It is a super-2 number, since 2×881798513² = 1555137235058022338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881798543) 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, 1568756 + ... + 1569317.

It is an arithmetic number, because the mean of its divisors is an integer number (221234217).

Almost surely, 2^881798513 is an apocalyptic number.

It is an amenable number.

881798513 is a deficient number, since it is larger than the sum of its proper divisors (3138355).

881798513 is a wasteful number, since it uses less digits than its factorization.

881798513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138354.

The product of its digits is 483840, while the sum is 50.

The square root of 881798513 is about 29695.0924059852. The cubic root of 881798513 is about 958.9363628437.

The spelling of 881798513 in words is "eight hundred eighty-one million, seven hundred ninety-eight thousand, five hundred thirteen".