1942387398 has 128 divisors (see below), whose sum is σ = 5314314240. Its totient is φ = 513643680.

The previous prime is 1942387379. The next prime is 1942387417. The reversal of 1942387398 is 8937832491.

1942387398 is a `hidden beast` number, since 19 + 4 + 238 + 7 + 398 = 666.

It is an interprime number because it is at equal distance from previous prime (1942387379) and next prime (1942387417).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 265911 + ... + 273117.

It is an arithmetic number, because the mean of its divisors is an integer number (41518080).

Almost surely, 2^1942387398 is an apocalyptic number.

1942387398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1942387398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657157120).

1942387398 is an abundant number, since it is smaller than the sum of its proper divisors (3371926842).

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

1942387398 is a wasteful number, since it uses less digits than its factorization.

1942387398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279 (or 7273 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 1942387398 is about 44072.5242980250. The cubic root of 1942387398 is about 1247.7051009022.

The spelling of 1942387398 in words is "one billion, nine hundred forty-two million, three hundred eighty-seven thousand, three hundred ninety-eight".