195151390 has 64 divisors (see below), whose sum is σ = 416078208. Its totient is φ = 64512000.

The previous prime is 195151373. The next prime is 195151391. The reversal of 195151390 is 93151591.

195151390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195151391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278040 + ... + 278740.

It is an arithmetic number, because the mean of its divisors is an integer number (6501222).

Almost surely, 2^195151390 is an apocalyptic number.

195151390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195151390 is an abundant number, since it is smaller than the sum of its proper divisors (220926818).

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

195151390 is a wasteful number, since it uses less digits than its factorization.

195151390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 6075, while the sum is 34.

The square root of 195151390 is about 13969.6596236272. The cubic root of 195151390 is about 580.0390282893.

The spelling of 195151390 in words is "one hundred ninety-five million, one hundred fifty-one thousand, three hundred ninety".