1616155487 has 8 divisors (see below), whose sum is σ = 1621998000. Its totient is φ = 1610323264.

The previous prime is 1616155459. The next prime is 1616155501. The reversal of 1616155487 is 7845516161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1616155487 - 2⁸ = 1616155231 is a prime.

It is a super-2 number, since 2×1616155487² = 5223917116320414338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616155087) 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, 437693 + ... + 441369.

It is an arithmetic number, because the mean of its divisors is an integer number (202749750).

Almost surely, 2^1616155487 is an apocalyptic number.

1616155487 is a deficient number, since it is larger than the sum of its proper divisors (5842513).

1616155487 is a wasteful number, since it uses less digits than its factorization.

1616155487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145.

The product of its digits is 201600, while the sum is 44.

The square root of 1616155487 is about 40201.4363798111. The cubic root of 1616155487 is about 1173.5304972151.

The spelling of 1616155487 in words is "one billion, six hundred sixteen million, one hundred fifty-five thousand, four hundred eighty-seven".