1660149534 has 8 divisors (see below), whose sum is σ = 3320299080. Its totient is φ = 553383176.

The previous prime is 1660149511. The next prime is 1660149551. The reversal of 1660149534 is 4359410661.

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

1660149534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1660149492 and 1660149501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138345789 + ... + 138345800.

It is an arithmetic number, because the mean of its divisors is an integer number (415037385).

Almost surely, 2^1660149534 is an apocalyptic number.

1660149534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1660149534 is a wasteful number, since it uses less digits than its factorization.

1660149534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276691594.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 1660149534 is about 40744.9326174434. The cubic root of 1660149534 is about 1184.0836997798.

The spelling of 1660149534 in words is "one billion, six hundred sixty million, one hundred forty-nine thousand, five hundred thirty-four".