1842140978 has 32 divisors (see below), whose sum is σ = 3135521664. Its totient is φ = 806775552.

The previous prime is 1842140921. The next prime is 1842140999. The reversal of 1842140978 is 8790412481.

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, 2900 + ... + 60767.

It is an arithmetic number, because the mean of its divisors is an integer number (97985052).

Almost surely, 2^1842140978 is an apocalyptic number.

1842140978 is a deficient number, since it is larger than the sum of its proper divisors (1293380686).

1842140978 is a wasteful number, since it uses less digits than its factorization.

1842140978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63746.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 1842140978 is about 42920.1698272502. The cubic root of 1842140978 is about 1225.8602266612.

The spelling of 1842140978 in words is "one billion, eight hundred forty-two million, one hundred forty thousand, nine hundred seventy-eight".