1611630042 has 48 divisors (see below), whose sum is σ = 3584292768. Its totient is φ = 479103040.

The previous prime is 1611630029. The next prime is 1611630061. The reversal of 1611630042 is 2400361161.

It is a junction number, because it is equal to n+sod(n) for n = 1611629994 and 1611630021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181048 + ... + 189740.

It is an arithmetic number, because the mean of its divisors is an integer number (74672766).

Almost surely, 2^1611630042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1611630042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792146384).

1611630042 is an abundant number, since it is smaller than the sum of its proper divisors (1972662726).

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

1611630042 is a wasteful number, since it uses less digits than its factorization.

1611630042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8815 (or 8762 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1611630042 is about 40145.1123052359. The cubic root of 1611630042 is about 1172.4341273801.

The spelling of 1611630042 in words is "one billion, six hundred eleven million, six hundred thirty thousand, forty-two".