1890031426 has 8 divisors (see below), whose sum is σ = 2835235260. Its totient is φ = 944953008.

The previous prime is 1890031397. The next prime is 1890031427. The reversal of 1890031426 is 6241300981.

It can be written as a sum of positive squares in 2 ways, for example, as 1726319401 + 163712025 = 41549^2 + 12795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1890031391 and 1890031400.

It is not an unprimeable number, because it can be changed into a prime (1890031427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31620 + ... + 69136.

Almost surely, 2^1890031426 is an apocalyptic number.

1890031426 is a deficient number, since it is larger than the sum of its proper divisors (945203834).

1890031426 is a wasteful number, since it uses less digits than its factorization.

1890031426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62708.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1890031426 is about 43474.4916704037. The cubic root of 1890031426 is about 1236.3924425772.

The spelling of 1890031426 in words is "one billion, eight hundred ninety million, thirty-one thousand, four hundred twenty-six".