1913029925 has 6 divisors (see below), whose sum is σ = 2372157138. Its totient is φ = 1530423920.

The previous prime is 1913029903. The next prime is 1913029927. The reversal of 1913029925 is 5299203191.

It can be written as a sum of positive squares in 3 ways, for example, as 228584161 + 1684445764 = 15119^2 + 41042^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1913029925 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913029927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38260574 + ... + 38260623.

It is an arithmetic number, because the mean of its divisors is an integer number (395359523).

Almost surely, 2^1913029925 is an apocalyptic number.

It is an amenable number.

1913029925 is a deficient number, since it is larger than the sum of its proper divisors (459127213).

1913029925 is an equidigital number, since it uses as much as digits as its factorization.

1913029925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76521207 (or 76521202 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 1913029925 is about 43738.1975508822. The cubic root of 1913029925 is about 1241.3871757060.

The spelling of 1913029925 in words is "one billion, nine hundred thirteen million, twenty-nine thousand, nine hundred twenty-five".