1897372746 has 24 divisors (see below), whose sum is σ = 4112004000. Its totient is φ = 632299176.

The previous prime is 1897372739. The next prime is 1897372753. The reversal of 1897372746 is 6472737981.

It is an interprime number because it is at equal distance from previous prime (1897372739) and next prime (1897372753).

It is a junction number, because it is equal to n+sod(n) for n = 1897372692 and 1897372701.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77505 + ... + 99003.

It is an arithmetic number, because the mean of its divisors is an integer number (171333500).

Almost surely, 2^1897372746 is an apocalyptic number.

1897372746 is an abundant number, since it is smaller than the sum of its proper divisors (2214631254).

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

1897372746 is a wasteful number, since it uses less digits than its factorization.

1897372746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26410 (or 26407 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 1897372746 is about 43558.8423399888. The cubic root of 1897372746 is about 1237.9911859748.

It can be divided in two parts, 18973 and 72746, that added together give a palindrome (91719).

The spelling of 1897372746 in words is "one billion, eight hundred ninety-seven million, three hundred seventy-two thousand, seven hundred forty-six".