381388908702 has 16 divisors (see below), whose sum is σ = 802924018560. Its totient is φ = 120438602712.

The previous prime is 381388908701. The next prime is 381388908739. The reversal of 381388908702 is 207809883183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381388908701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672758258 + ... + 1672758485.

It is an arithmetic number, because the mean of its divisors is an integer number (50182751160).

Almost surely, 2^381388908702 is an apocalyptic number.

381388908702 is an abundant number, since it is smaller than the sum of its proper divisors (421535109858).

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

381388908702 is a wasteful number, since it uses less digits than its factorization.

381388908702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345516767.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 381388908702 in words is "three hundred eighty-one billion, three hundred eighty-eight million, nine hundred eight thousand, seven hundred two".