1898276634 has 64 divisors (see below), whose sum is σ = 4294097280. Its totient is φ = 629261136.

The previous prime is 1898276623. The next prime is 1898276663. The reversal of 1898276634 is 4366728981.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 860577 + ... + 862779.

It is an arithmetic number, because the mean of its divisors is an integer number (67095270).

Almost surely, 2^1898276634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898276634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2147048640).

1898276634 is an abundant number, since it is smaller than the sum of its proper divisors (2395820646).

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

1898276634 is an equidigital number, since it uses as much as digits as its factorization.

1898276634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2405 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 1898276634 is about 43569.2165869436. The cubic root of 1898276634 is about 1238.1877433342.

The spelling of 1898276634 in words is "one billion, eight hundred ninety-eight million, two hundred seventy-six thousand, six hundred thirty-four".