1295138950 has 24 divisors (see below), whose sum is σ = 2753096112. Its totient is φ = 444047520.

The previous prime is 1295138921. The next prime is 1295138951. The reversal of 1295138950 is 598315921.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1295138897 and 1295138906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295138951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1849849 + ... + 1850548.

It is an arithmetic number, because the mean of its divisors is an integer number (114712338).

Almost surely, 2^1295138950 is an apocalyptic number.

1295138950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1295138950 is an abundant number, since it is smaller than the sum of its proper divisors (1457957162).

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

1295138950 is a wasteful number, since it uses less digits than its factorization.

1295138950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700416 (or 3700411 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 1295138950 is about 35988.0389851962. The cubic root of 1295138950 is about 1090.0308466988.

The spelling of 1295138950 in words is "one billion, two hundred ninety-five million, one hundred thirty-eight thousand, nine hundred fifty".