161487488 has 64 divisors (see below), whose sum is σ = 348105600. Its totient is φ = 74330112.

The previous prime is 161487481. The next prime is 161487493. The reversal of 161487488 is 884784161.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (161487481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101483 + ... + 103061.

It is an arithmetic number, because the mean of its divisors is an integer number (5439150).

Almost surely, 2^161487488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161487488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174052800).

161487488 is an abundant number, since it is smaller than the sum of its proper divisors (186618112).

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

161487488 is a wasteful number, since it uses less digits than its factorization.

161487488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657 (or 1645 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 161487488 is about 12707.7727395480. The cubic root of 161487488 is about 544.5606964060.

The spelling of 161487488 in words is "one hundred sixty-one million, four hundred eighty-seven thousand, four hundred eighty-eight".