351771378 has 96 divisors (see below), whose sum is σ = 868009344. Its totient is φ = 93063168.

The previous prime is 351771319. The next prime is 351771379. The reversal of 351771378 is 873177153.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (351771379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 885876 + ... + 886272.

It is an arithmetic number, because the mean of its divisors is an integer number (9041764).

Almost surely, 2^351771378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351771378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434004672).

351771378 is an abundant number, since it is smaller than the sum of its proper divisors (516237966).

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

351771378 is a wasteful number, since it uses less digits than its factorization.

351771378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 499 counting only the distinct ones).

The product of its digits is 123480, while the sum is 42.

The square root of 351771378 is about 18755.5692528913. The cubic root of 351771378 is about 705.9167712131.

The spelling of 351771378 in words is "three hundred fifty-one million, seven hundred seventy-one thousand, three hundred seventy-eight".