395618742 has 40 divisors (see below), whose sum is σ = 892907400. Its totient is φ = 130916736.

The previous prime is 395618731. The next prime is 395618761. The reversal of 395618742 is 247816593.

395618742 is a `hidden beast` number, since 3 + 9 + 561 + 87 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13734 + ... + 31302.

It is an arithmetic number, because the mean of its divisors is an integer number (22322685).

Almost surely, 2^395618742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395618742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446453700).

395618742 is an abundant number, since it is smaller than the sum of its proper divisors (497288658).

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

395618742 is a wasteful number, since it uses less digits than its factorization.

395618742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17722 (or 17713 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 395618742 is about 19890.1669676250. The cubic root of 395618742 is about 734.1063023680.

The spelling of 395618742 in words is "three hundred ninety-five million, six hundred eighteen thousand, seven hundred forty-two".