1820057070 has 32 divisors (see below), whose sum is σ = 4704148512. Its totient is φ = 448013952.

The previous prime is 1820057059. The next prime is 1820057147. The reversal of 1820057070 is 707500281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

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, 2333017 + ... + 2333796.

It is an arithmetic number, because the mean of its divisors is an integer number (147004641).

Almost surely, 2^1820057070 is an apocalyptic number.

1820057070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1820057070 is an abundant number, since it is smaller than the sum of its proper divisors (2884091442).

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

1820057070 is a wasteful number, since it uses less digits than its factorization.

1820057070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4666836.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1820057070 is about 42662.1268808764. The cubic root of 1820057070 is about 1220.9419112300.

The spelling of 1820057070 in words is "one billion, eight hundred twenty million, fifty-seven thousand, seventy".