7810513494 has 16 divisors (see below), whose sum is σ = 17852602368. Its totient is φ = 2231575272.

The previous prime is 7810513481. The next prime is 7810513553. The reversal of 7810513494 is 4943150187.

It is a happy number.

It is a super-2 number, since 2×7810513494² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 185964607 = 7810513494 / (7 + 8 + 1 + 0 + 5 + 1 + 3 + 4 + 9 + 4).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92982262 + ... + 92982345.

It is an arithmetic number, because the mean of its divisors is an integer number (1115787648).

Almost surely, 2^7810513494 is an apocalyptic number.

7810513494 is an abundant number, since it is smaller than the sum of its proper divisors (10042088874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7810513494 is a wasteful number, since it uses less digits than its factorization.

7810513494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185964619.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 7810513494 is about 88377.1095589803. The cubic root of 7810513494 is about 1984.0831203456.

The spelling of 7810513494 in words is "seven billion, eight hundred ten million, five hundred thirteen thousand, four hundred ninety-four".