1878253494 has 36 divisors (see below), whose sum is σ = 4070687868. Its totient is φ = 577499520.

The previous prime is 1878253409. The next prime is 1878253499. The reversal of 1878253494 is 4943528781.

It is a happy number.

It is a super-3 number, since 3×1878253494³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878253499) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1379374 + ... + 1380734.

It is an arithmetic number, because the mean of its divisors is an integer number (113074663).

Almost surely, 2^1878253494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878253494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035343934).

1878253494 is an abundant number, since it is smaller than the sum of its proper divisors (2192434374).

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

1878253494 is an equidigital number, since it uses as much as digits as its factorization.

1878253494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753 (or 1379 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 1878253494 is about 43338.8220190628. The cubic root of 1878253494 is about 1233.8188522492.

The spelling of 1878253494 in words is "one billion, eight hundred seventy-eight million, two hundred fifty-three thousand, four hundred ninety-four".