1331978150 has 12 divisors (see below), whose sum is σ = 2477479452. Its totient is φ = 532791240.

The previous prime is 1331978119. The next prime is 1331978171. The reversal of 1331978150 is 518791331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13319732 + ... + 13319831.

It is an arithmetic number, because the mean of its divisors is an integer number (206456621).

Almost surely, 2^1331978150 is an apocalyptic number.

1331978150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331978150 is a deficient number, since it is larger than the sum of its proper divisors (1145501302).

1331978150 is a wasteful number, since it uses less digits than its factorization.

1331978150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26639575 (or 26639570 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1331978150 is about 36496.2758374057. The cubic root of 1331978150 is about 1100.2693968276.

The spelling of 1331978150 in words is "one billion, three hundred thirty-one million, nine hundred seventy-eight thousand, one hundred fifty".