1601447157 has 12 divisors (see below), whose sum is σ = 2342483520. Its totient is φ = 1054116648.

The previous prime is 1601447149. The next prime is 1601447161. The reversal of 1601447157 is 7517441061.

1601447157 is a `hidden beast` number, since 1 + 60 + 1 + 447 + 157 = 666.

It is not a de Polignac number, because 1601447157 - 2³ = 1601447149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601447117) 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, 1125483 + ... + 1126904.

It is an arithmetic number, because the mean of its divisors is an integer number (195206960).

Almost surely, 2^1601447157 is an apocalyptic number.

It is an amenable number.

1601447157 is a deficient number, since it is larger than the sum of its proper divisors (741036363).

1601447157 is a wasteful number, since it uses less digits than its factorization.

1601447157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252472 (or 2252469 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1601447157 is about 40018.0853739906. The cubic root of 1601447157 is about 1169.9596150864.

The spelling of 1601447157 in words is "one billion, six hundred one million, four hundred forty-seven thousand, one hundred fifty-seven".