1371145920 has 112 divisors (see below), whose sum is σ = 4542739200. Its totient is φ = 349735936.

The previous prime is 1371145891. The next prime is 1371145957. The reversal of 1371145920 is 295411731.

It is a super-2 number, since 2×1371145920² = 3760082267865292800, which contains 22 as substring.

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, 8970 + ... + 53129.

Almost surely, 2^1371145920 is an apocalyptic number.

1371145920 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 1371145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2271369600).

1371145920 is an abundant number, since it is smaller than the sum of its proper divisors (3171593280).

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

1371145920 is a wasteful number, since it uses less digits than its factorization.

1371145920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62142 (or 62132 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1371145920 is about 37028.9875637993. The cubic root of 1371145920 is about 1110.9501158143.

The spelling of 1371145920 in words is "one billion, three hundred seventy-one million, one hundred forty-five thousand, nine hundred twenty".