1481157136 has 20 divisors (see below), whose sum is σ = 2968699500. Its totient is φ = 715041152.

The previous prime is 1481157131. The next prime is 1481157149. The reversal of 1481157136 is 6317511841.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 290907136 + 1190250000 = 17056^2 + 34500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1481157095 and 1481157104.

It is not an unprimeable number, because it can be changed into a prime (1481157131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595611 + ... + 1596538.

It is an arithmetic number, because the mean of its divisors is an integer number (148434975).

Almost surely, 2^1481157136 is an apocalyptic number.

1481157136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1481157136 is an abundant number, since it is smaller than the sum of its proper divisors (1487542364).

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

1481157136 is a wasteful number, since it uses less digits than its factorization.

1481157136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192186 (or 3192180 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 1481157136 is about 38485.8043439396. The cubic root of 1481157136 is about 1139.9007649334.

Adding to 1481157136 its reverse (6317511841), we get a palindrome (7798668977).

The spelling of 1481157136 in words is "one billion, four hundred eighty-one million, one hundred fifty-seven thousand, one hundred thirty-six".