1612805742 has 80 divisors (see below), whose sum is σ = 3840737472. Its totient is φ = 504092160.

The previous prime is 1612805713. The next prime is 1612805743. The reversal of 1612805742 is 2475082161.

1612805742 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 80 + 574 + 2 = 666.

It is a super-2 number, since 2×1612805742² = 5202284722856341128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1612805697 and 1612805706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612805743) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 861067 + ... + 862937.

Almost surely, 2^1612805742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1612805742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920368736).

1612805742 is an abundant number, since it is smaller than the sum of its proper divisors (2227931730).

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

1612805742 is a wasteful number, since it uses less digits than its factorization.

1612805742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1612805742 is about 40159.7527631832. The cubic root of 1612805742 is about 1172.7191588307.

The spelling of 1612805742 in words is "one billion, six hundred twelve million, eight hundred five thousand, seven hundred forty-two".