1373245440 has 416 divisors, whose sum is σ = 5233852416. Its totient is φ = 300810240.

The previous prime is 1373245411. The next prime is 1373245453. The reversal of 1373245440 is 445423731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13332429 + ... + 13332531.

It is an arithmetic number, because the mean of its divisors is an integer number (12581376).

Almost surely, 2^1373245440 is an apocalyptic number.

1373245440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616926208).

1373245440 is an abundant number, since it is smaller than the sum of its proper divisors (3860606976).

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

1373245440 is a wasteful number, since it uses less digits than its factorization.

1373245440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 1373245440 is about 37057.3264011315. The cubic root of 1373245440 is about 1111.5168613528.

The spelling of 1373245440 in words is "one billion, three hundred seventy-three million, two hundred forty-five thousand, four hundred forty".