1659452642 has 16 divisors (see below), whose sum is σ = 2504990400. Its totient is φ = 824467248.

The previous prime is 1659452629. The next prime is 1659452657. The reversal of 1659452642 is 2462549561.

It is a junction number, because it is equal to n+sod(n) for n = 1659452593 and 1659452602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358688 + ... + 363284.

It is an arithmetic number, because the mean of its divisors is an integer number (156561900).

Almost surely, 2^1659452642 is an apocalyptic number.

1659452642 is a deficient number, since it is larger than the sum of its proper divisors (845537758).

1659452642 is a wasteful number, since it uses less digits than its factorization.

1659452642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5705.

The product of its digits is 518400, while the sum is 44.

The square root of 1659452642 is about 40736.3798342464. The cubic root of 1659452642 is about 1183.9179930304.

The spelling of 1659452642 in words is "one billion, six hundred fifty-nine million, four hundred fifty-two thousand, six hundred forty-two".