1864230878490 has 64 divisors (see below), whose sum is σ = 4541403870720. Its totient is φ = 489657579840.

The previous prime is 1864230878473. The next prime is 1864230878491. The reversal of 1864230878490 is 948780324681.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1864230878491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21783885 + ... + 21869295.

It is an arithmetic number, because the mean of its divisors is an integer number (70959435480).

Almost surely, 2^{1864230878490} is an apocalyptic number.

1864230878490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1864230878490 is an abundant number, since it is smaller than the sum of its proper divisors (2677172992230).

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

1864230878490 is a wasteful number, since it uses less digits than its factorization.

1864230878490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96347.

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 1864230878490 in words is "one trillion, eight hundred sixty-four billion, two hundred thirty million, eight hundred seventy-eight thousand, four hundred ninety".