1897413444 has 24 divisors (see below), whose sum is σ = 4919220320. Its totient is φ = 632471112.

The previous prime is 1897413439. The next prime is 1897413461. The reversal of 1897413444 is 4443147981.

It is a super-2 number, since 2×1897413444² = 7200355554943882272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1897413444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8784214 + ... + 8784429.

Almost surely, 2^1897413444 is an apocalyptic number.

It is an amenable number.

1897413444 is an abundant number, since it is smaller than the sum of its proper divisors (3021806876).

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

1897413444 is a wasteful number, since it uses less digits than its factorization.

1897413444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17568656 (or 17568648 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1897413444 is about 43559.3094986594. The cubic root of 1897413444 is about 1238.0000374081. Note that the first 4 decimals are identical.

The spelling of 1897413444 in words is "one billion, eight hundred ninety-seven million, four hundred thirteen thousand, four hundred forty-four".