1487616161 has 16 divisors (see below), whose sum is σ = 1669202640. Its totient is φ = 1318840320.

The previous prime is 1487616157. The next prime is 1487616181. The reversal of 1487616161 is 1616167841.

It can be written as a sum of positive squares in 8 ways, for example, as 48400 + 1487567761 = 220^2 + 38569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1487616161 - 2² = 1487616157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1487616181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16586 + ... + 57011.

It is an arithmetic number, because the mean of its divisors is an integer number (104325165).

Almost surely, 2^1487616161 is an apocalyptic number.

It is an amenable number.

1487616161 is a deficient number, since it is larger than the sum of its proper divisors (181586479).

1487616161 is a wasteful number, since it uses less digits than its factorization.

1487616161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73684.

The product of its digits is 48384, while the sum is 41.

The square root of 1487616161 is about 38569.6274418097. The cubic root of 1487616161 is about 1141.5553206579. Note that the first 3 decimals are identical.

The spelling of 1487616161 in words is "one billion, four hundred eighty-seven million, six hundred sixteen thousand, one hundred sixty-one".