1890471572 has 18 divisors (see below), whose sum is σ = 3636424554. Its totient is φ = 859305040.

The previous prime is 1890471571. The next prime is 1890471589. The reversal of 1890471572 is 2751740981.

It can be written as a sum of positive squares in only one way, i.e., 1259256196 + 631215376 = 35486^2 + 25124^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890471571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1952483 + ... + 1953450.

Almost surely, 2^1890471572 is an apocalyptic number.

It is an amenable number.

1890471572 is a deficient number, since it is larger than the sum of its proper divisors (1745952982).

1890471572 is a wasteful number, since it uses less digits than its factorization.

1890471572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905959 (or 3905946 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 1890471572 is about 43479.5534935675. The cubic root of 1890471572 is about 1236.4884111666.

The spelling of 1890471572 in words is "one billion, eight hundred ninety million, four hundred seventy-one thousand, five hundred seventy-two".