381051396 has 216 divisors, whose sum is σ = 1173934944. Its totient is φ = 102981120.

The previous prime is 381051367. The next prime is 381051401. The reversal of 381051396 is 693150183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 381051396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3561175 + ... + 3561281.

It is an arithmetic number, because the mean of its divisors is an integer number (5434884).

Almost surely, 2^381051396 is an apocalyptic number.

381051396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381051396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586967472).

381051396 is an abundant number, since it is smaller than the sum of its proper divisors (792883548).

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

381051396 is a wasteful number, since it uses less digits than its factorization.

381051396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 381051396 is about 19520.5377999685. The cubic root of 381051396 is about 724.9830489893.

The spelling of 381051396 in words is "three hundred eighty-one million, fifty-one thousand, three hundred ninety-six".