161487387 has 6 divisors (see below), whose sum is σ = 233259572. Its totient is φ = 107658252.

The previous prime is 161487379. The next prime is 161487419. The reversal of 161487387 is 783784161.

161487387 is a `hidden beast` number, since 161 + 487 + 3 + 8 + 7 = 666.

It is not a de Polignac number, because 161487387 - 2³ = 161487379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161487377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8971513 + ... + 8971530.

Almost surely, 2^161487387 is an apocalyptic number.

161487387 is a deficient number, since it is larger than the sum of its proper divisors (71772185).

161487387 is a wasteful number, since it uses less digits than its factorization.

161487387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17943049 (or 17943046 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 161487387 is about 12707.7687656016. The cubic root of 161487387 is about 544.5605828768.

The spelling of 161487387 in words is "one hundred sixty-one million, four hundred eighty-seven thousand, three hundred eighty-seven".