1897885464 has 32 divisors (see below), whose sum is σ = 4745805120. Its totient is φ = 632482976.

The previous prime is 1897885459. The next prime is 1897885469. The reversal of 1897885464 is 4645887981.

It is an interprime number because it is at equal distance from previous prime (1897885459) and next prime (1897885469).

It is a junction number, because it is equal to n+sod(n) for n = 1897885398 and 1897885407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897885469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166987 + ... + 177989.

It is an arithmetic number, because the mean of its divisors is an integer number (148306410).

Almost surely, 2^1897885464 is an apocalyptic number.

It is an amenable number.

1897885464 is an abundant number, since it is smaller than the sum of its proper divisors (2847919656).

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

1897885464 is a wasteful number, since it uses less digits than its factorization.

1897885464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18199 (or 18195 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 60.

The square root of 1897885464 is about 43564.7272916978. The cubic root of 1897885464 is about 1238.1026880857.

The spelling of 1897885464 in words is "one billion, eight hundred ninety-seven million, eight hundred eighty-five thousand, four hundred sixty-four".