1081851942 has 16 divisors (see below), whose sum is σ = 2173409280. Its totient is φ = 358999752.

The previous prime is 1081851941. The next prime is 1081851949. The reversal of 1081851942 is 2491581801.

It is a self number, because there is not a number n which added to its sum of digits gives 1081851942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081851941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402942 + ... + 405617.

It is an arithmetic number, because the mean of its divisors is an integer number (135838080).

Almost surely, 2^1081851942 is an apocalyptic number.

1081851942 is an abundant number, since it is smaller than the sum of its proper divisors (1091557338).

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

1081851942 is a wasteful number, since it uses less digits than its factorization.

1081851942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808787.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 1081851942 is about 32891.5177819449. The cubic root of 1081851942 is about 1026.5716731743.

The spelling of 1081851942 in words is "one billion, eighty-one million, eight hundred fifty-one thousand, nine hundred forty-two".