1842940857 has 16 divisors (see below), whose sum is σ = 2564690688. Its totient is φ = 1176040320.

The previous prime is 1842940837. The next prime is 1842940859. The reversal of 1842940857 is 7580492481.

It is a happy number.

It is not a de Polignac number, because 1842940857 - 2¹² = 1842936761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1842940859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134833 + ... + 147870.

It is an arithmetic number, because the mean of its divisors is an integer number (160293168).

Almost surely, 2^1842940857 is an apocalyptic number.

It is an amenable number.

1842940857 is a deficient number, since it is larger than the sum of its proper divisors (721749831).

1842940857 is a wasteful number, since it uses less digits than its factorization.

1842940857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282800.

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 1842940857 is about 42929.4870339723. The cubic root of 1842940857 is about 1226.0376285680.

The spelling of 1842940857 in words is "one billion, eight hundred forty-two million, nine hundred forty thousand, eight hundred fifty-seven".