1373073408 has 312 divisors, whose sum is σ = 4814735328. Its totient is φ = 368050176.

The previous prime is 1373073407. The next prime is 1373073439. The reversal of 1373073408 is 8043703731.

1373073408 is a `hidden beast` number, since 1 + 3 + 7 + 307 + 340 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373073407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4386660 + ... + 4386972.

It is an arithmetic number, because the mean of its divisors is an integer number (15431844).

Almost surely, 2^1373073408 is an apocalyptic number.

1373073408 is a gapful number since it is divisible by the number (18) 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 1373073408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2407367664).

1373073408 is an abundant number, since it is smaller than the sum of its proper divisors (3441661920).

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

1373073408 is a wasteful number, since it uses less digits than its factorization.

1373073408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 1373073408 is about 37055.0051679932. The cubic root of 1373073408 is about 1111.4704446797.

It can be divided in two parts, 137307 and 3408, that added together give a triangular number (140715 = T₅₃₀).

The spelling of 1373073408 in words is "one billion, three hundred seventy-three million, seventy-three thousand, four hundred eight".