7619425921 has 4 divisors (see below), whose sum is σ = 7619632852. Its totient is φ = 7619218992.

The previous prime is 7619425897. The next prime is 7619425943. The reversal of 7619425921 is 1295249167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1295249167 = 31957 ⋅40531.

It can be written as a sum of positive squares in 2 ways, for example, as 2668755600 + 4950670321 = 51660^2 + 70361^2 .

It is a cyclic number.

It is not a de Polignac number, because 7619425921 - 2²⁷ = 7485208193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7619425321) 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, 31590 + ... + 127423.

It is an arithmetic number, because the mean of its divisors is an integer number (1904908213).

Almost surely, 2^7619425921 is an apocalyptic number.

It is an amenable number.

7619425921 is a deficient number, since it is larger than the sum of its proper divisors (206931).

7619425921 is a wasteful number, since it uses less digits than its factorization.

7619425921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206930.

The product of its digits is 272160, while the sum is 46.

The square root of 7619425921 is about 87289.3230641640. The cubic root of 7619425921 is about 1967.7688605070.

The spelling of 7619425921 in words is "seven billion, six hundred nineteen million, four hundred twenty-five thousand, nine hundred twenty-one".