1915275136 has 64 divisors (see below), whose sum is σ = 3991708800. Its totient is φ = 913651200.

The previous prime is 1915275121. The next prime is 1915275137. The reversal of 1915275136 is 6315725191.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915275137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821811 + ... + 1822861.

It is an arithmetic number, because the mean of its divisors is an integer number (62370450).

Almost surely, 2^1915275136 is an apocalyptic number.

1915275136 is a gapful number since it is divisible by the number (16) 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 1915275136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995854400).

1915275136 is an abundant number, since it is smaller than the sum of its proper divisors (2076433664).

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

1915275136 is a wasteful number, since it uses less digits than its factorization.

1915275136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707 (or 1695 counting only the distinct ones).

The product of its digits is 56700, while the sum is 40.

The square root of 1915275136 is about 43763.8565028266. The cubic root of 1915275136 is about 1241.8726336062.

The spelling of 1915275136 in words is "one billion, nine hundred fifteen million, two hundred seventy-five thousand, one hundred thirty-six".