1331536149 has 12 divisors (see below), whose sum is σ = 1985373312. Its totient is φ = 859055400.

The previous prime is 1331536127. The next prime is 1331536153. The reversal of 1331536149 is 9416351331.

It is a happy number.

1331536149 is a `hidden beast` number, since 1 + 3 + 31 + 5 + 3 + 614 + 9 = 666.

It is not a de Polignac number, because 1331536149 - 2⁷ = 1331536021 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331532149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2385987 + ... + 2386544.

It is an arithmetic number, because the mean of its divisors is an integer number (165447776).

Almost surely, 2^1331536149 is an apocalyptic number.

It is an amenable number.

1331536149 is a deficient number, since it is larger than the sum of its proper divisors (653837163).

1331536149 is a wasteful number, since it uses less digits than its factorization.

1331536149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772568 (or 4772565 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 1331536149 is about 36490.2199089016. The cubic root of 1331536149 is about 1100.1476796215.

The spelling of 1331536149 in words is "one billion, three hundred thirty-one million, five hundred thirty-six thousand, one hundred forty-nine".