1945615000 has 80 divisors (see below), whose sum is σ = 5209894800. Its totient is φ = 667056000.

The previous prime is 1945614977. The next prime is 1945615019. The reversal of 1945615000 is 5165491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7206 + ... + 62794.

It is an arithmetic number, because the mean of its divisors is an integer number (65123685).

Almost surely, 2^1945615000 is an apocalyptic number.

1945615000 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 1945615000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2604947400).

1945615000 is an abundant number, since it is smaller than the sum of its proper divisors (3264279800).

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

1945615000 is an equidigital number, since it uses as much as digits as its factorization.

1945615000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55622 (or 55603 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1945615000 is about 44109.1260398571. The cubic root of 1945615000 is about 1248.3958088038.

The spelling of 1945615000 in words is "one billion, nine hundred forty-five million, six hundred fifteen thousand".