1898878463 has 4 divisors (see below), whose sum is σ = 1899006648. Its totient is φ = 1898750280.

The previous prime is 1898878441. The next prime is 1898878481. The reversal of 1898878463 is 3648788981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1898878463 - 2²⁰ = 1897829887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1898878396 and 1898878405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898878403) 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, 38453 + ... + 72638.

It is an arithmetic number, because the mean of its divisors is an integer number (474751662).

Almost surely, 2^1898878463 is an apocalyptic number.

1898878463 is a deficient number, since it is larger than the sum of its proper divisors (128185).

1898878463 is a wasteful number, since it uses less digits than its factorization.

1898878463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128184.

The product of its digits is 18579456, while the sum is 62.

The square root of 1898878463 is about 43576.1226246668. The cubic root of 1898878463 is about 1238.3185810533.

The spelling of 1898878463 in words is "one billion, eight hundred ninety-eight million, eight hundred seventy-eight thousand, four hundred sixty-three".