1895863494 has 64 divisors (see below), whose sum is σ = 4597986816. Its totient is φ = 508737024.

The previous prime is 1895863483. The next prime is 1895863499. The reversal of 1895863494 is 4943685981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1895863499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370884 + ... + 375960.

It is an arithmetic number, because the mean of its divisors is an integer number (71843544).

Almost surely, 2^1895863494 is an apocalyptic number.

1895863494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1895863494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298993408).

1895863494 is an abundant number, since it is smaller than the sum of its proper divisors (2702123322).

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

1895863494 is a wasteful number, since it uses less digits than its factorization.

1895863494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629.

The product of its digits is 7464960, while the sum is 57.

The square root of 1895863494 is about 43541.5146038812. The cubic root of 1895863494 is about 1237.6628483987.

The spelling of 1895863494 in words is "one billion, eight hundred ninety-five million, eight hundred sixty-three thousand, four hundred ninety-four".