1481157149 has 2 divisors, whose sum is σ = 1481157150. Its totient is φ = 1481157148.

The previous prime is 1481157131. The next prime is 1481157157. The reversal of 1481157149 is 9417511841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1318416100 + 162741049 = 36310^2 + 12757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1481157149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1481157109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740578574 + 740578575.

It is an arithmetic number, because the mean of its divisors is an integer number (740578575).

Almost surely, 2^1481157149 is an apocalyptic number.

It is an amenable number.

1481157149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1481157149 is an equidigital number, since it uses as much as digits as its factorization.

1481157149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 41.

The square root of 1481157149 is about 38485.8045128330. The cubic root of 1481157149 is about 1139.9007682683.

The spelling of 1481157149 in words is "one billion, four hundred eighty-one million, one hundred fifty-seven thousand, one hundred forty-nine".