7520345494 has 4 divisors (see below), whose sum is σ = 11280518244. Its totient is φ = 3760172746.

The previous prime is 7520345491. The next prime is 7520345537. The reversal of 7520345494 is 4945430257.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×7520345494² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7520345494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7520345491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1880086372 + ... + 1880086375.

It is an arithmetic number, because the mean of its divisors is an integer number (2820129561).

Almost surely, 2^7520345494 is an apocalyptic number.

7520345494 is a deficient number, since it is larger than the sum of its proper divisors (3760172750).

7520345494 is a wasteful number, since it uses less digits than its factorization.

7520345494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760172749.

The product of its (nonzero) digits is 604800, while the sum is 43.

The square root of 7520345494 is about 86719.9255880677. The cubic root of 7520345494 is about 1959.2022206173.

The spelling of 7520345494 in words is "seven billion, five hundred twenty million, three hundred forty-five thousand, four hundred ninety-four".