618851946 has 32 divisors (see below), whose sum is σ = 1279162368. Its totient is φ = 199390320.

The previous prime is 618851939. The next prime is 618851953. The reversal of 618851946 is 649158816.

It is an interprime number because it is at equal distance from previous prime (618851939) and next prime (618851953).

It is a junction number, because it is equal to n+sod(n) for n = 618851895 and 618851904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219381 + ... + 222183.

It is an arithmetic number, because the mean of its divisors is an integer number (39973824).

Almost surely, 2^618851946 is an apocalyptic number.

618851946 is an abundant number, since it is smaller than the sum of its proper divisors (660310422).

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

618851946 is a wasteful number, since it uses less digits than its factorization.

618851946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026.

The product of its digits is 414720, while the sum is 48.

The square root of 618851946 is about 24876.7350349679. The cubic root of 618851946 is about 852.1752570987.

The spelling of 618851946 in words is "six hundred eighteen million, eight hundred fifty-one thousand, nine hundred forty-six".