1870746820 has 48 divisors (see below), whose sum is σ = 4028048640. Its totient is φ = 729421056.

The previous prime is 1870746817. The next prime is 1870746847. The reversal of 1870746820 is 286470781.

It is a super-2 number, since 2×1870746820² = 6999387329080224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 487429 + ... + 491251.

It is an arithmetic number, because the mean of its divisors is an integer number (83917680).

Almost surely, 2^1870746820 is an apocalyptic number.

1870746820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1870746820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014024320).

1870746820 is an abundant number, since it is smaller than the sum of its proper divisors (2157301820).

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

1870746820 is a wasteful number, since it uses less digits than its factorization.

1870746820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 1870746820 is about 43252.1308145622. The cubic root of 1870746820 is about 1232.1729540526.

The spelling of 1870746820 in words is "one billion, eight hundred seventy million, seven hundred forty-six thousand, eight hundred twenty".