1912966398 has 96 divisors (see below), whose sum is σ = 4997341440. Its totient is φ = 516637440.

The previous prime is 1912966351. The next prime is 1912966403. The reversal of 1912966398 is 8936692191.

1912966398 is a `hidden beast` number, since 191 + 2 + 9 + 66 + 398 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2108661 + ... + 2109567.

It is an arithmetic number, because the mean of its divisors is an integer number (52055640).

Almost surely, 2^1912966398 is an apocalyptic number.

1912966398 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 1912966398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2498670720).

1912966398 is an abundant number, since it is smaller than the sum of its proper divisors (3084375042).

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

1912966398 is a wasteful number, since it uses less digits than its factorization.

1912966398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822 (or 1819 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 1912966398 is about 43737.4713260838. The cubic root of 1912966398 is about 1241.3734344197.

The spelling of 1912966398 in words is "one billion, nine hundred twelve million, nine hundred sixty-six thousand, three hundred ninety-eight".