151581380 has 12 divisors (see below), whose sum is σ = 318320940. Its totient is φ = 60632544.

The previous prime is 151581371. The next prime is 151581421. The reversal of 151581380 is 83185151.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68989636 + 82591744 = 8306^2 + 9088^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3789515 + ... + 3789554.

It is an arithmetic number, because the mean of its divisors is an integer number (26526745).

Almost surely, 2^151581380 is an apocalyptic number.

151581380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151581380 is an abundant number, since it is smaller than the sum of its proper divisors (166739560).

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

151581380 is a wasteful number, since it uses less digits than its factorization.

151581380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7579078 (or 7579076 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 32.

The square root of 151581380 is about 12311.8390177910. The cubic root of 151581380 is about 533.1899466970.

The spelling of 151581380 in words is "one hundred fifty-one million, five hundred eighty-one thousand, three hundred eighty".