1295775090 has 64 divisors (see below), whose sum is σ = 3461253120. Its totient is φ = 344954880.

The previous prime is 1295775079. The next prime is 1295775121. The reversal of 1295775090 is 905775921.

1295775090 is a `hidden beast` number, since 1 + 29 + 577 + 50 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169327 + ... + 176813.

It is an arithmetic number, because the mean of its divisors is an integer number (54082080).

Almost surely, 2^1295775090 is an apocalyptic number.

1295775090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1295775090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1730626560).

1295775090 is an abundant number, since it is smaller than the sum of its proper divisors (2165478030).

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

1295775090 is a wasteful number, since it uses less digits than its factorization.

1295775090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8144 (or 8138 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 1295775090 is about 35996.8761144630. The cubic root of 1295775090 is about 1090.2092828233.

The spelling of 1295775090 in words is "one billion, two hundred ninety-five million, seven hundred seventy-five thousand, ninety".