415678813 has 4 divisors (see below), whose sum is σ = 453467808. Its totient is φ = 377889820.

The previous prime is 415678771. The next prime is 415678829. The reversal of 415678813 is 318876514.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-415678813 is a prime.

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 415678813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415679813) 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, 18894481 + ... + 18894502.

It is an arithmetic number, because the mean of its divisors is an integer number (113366952).

Almost surely, 2^415678813 is an apocalyptic number.

It is an amenable number.

415678813 is a deficient number, since it is larger than the sum of its proper divisors (37788995).

415678813 is a wasteful number, since it uses less digits than its factorization.

415678813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37788994.

The product of its digits is 161280, while the sum is 43.

The square root of 415678813 is about 20388.2027898488. The cubic root of 415678813 is about 746.3100610546.

The spelling of 415678813 in words is "four hundred fifteen million, six hundred seventy-eight thousand, eight hundred thirteen".