2315445144 has 128 divisors (see below), whose sum is σ = 6310656000. Its totient is φ = 705729024.

The previous prime is 2315445103. The next prime is 2315445151. The reversal of 2315445144 is 4415445132.

It is a happy number.

It is a super-2 number, since 2×2315445144² = 10722572429746361472, which contains 22 as substring.

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, 1744209 + ... + 1745535.

It is an arithmetic number, because the mean of its divisors is an integer number (49302000).

Almost surely, 2^2315445144 is an apocalyptic number.

2315445144 is a gapful number since it is divisible by the number (24) 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 2315445144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3155328000).

2315445144 is an abundant number, since it is smaller than the sum of its proper divisors (3995210856).

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

2315445144 is a wasteful number, since it uses less digits than its factorization.

2315445144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1493 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 2315445144 is about 48119.0725596410. The cubic root of 2315445144 is about 1322.9542693021.

The spelling of 2315445144 in words is "two billion, three hundred fifteen million, four hundred forty-five thousand, one hundred forty-four".