1325723790 has 32 divisors (see below), whose sum is σ = 3206799360. Its totient is φ = 350741664.

The previous prime is 1325723779. The next prime is 1325723827. The reversal of 1325723790 is 973275231.

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 15 ways as a sum of consecutive naturals, for example, 170170 + ... + 177789.

It is an arithmetic number, because the mean of its divisors is an integer number (100212480).

Almost surely, 2^1325723790 is an apocalyptic number.

1325723790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1325723790 is an abundant number, since it is smaller than the sum of its proper divisors (1881075570).

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

1325723790 is a wasteful number, since it uses less digits than its factorization.

1325723790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348096.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 1325723790 is about 36410.4901093078. The cubic root of 1325723790 is about 1098.5445737760.

The spelling of 1325723790 in words is "one billion, three hundred twenty-five million, seven hundred twenty-three thousand, seven hundred ninety".