1912428147 has 32 divisors (see below), whose sum is σ = 3087193600. Its totient is φ = 1028671488.

The previous prime is 1912428143. The next prime is 1912428169. The reversal of 1912428147 is 7418242191.

It is not a de Polignac number, because 1912428147 - 2² = 1912428143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912428143) 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, 47379 + ... + 77907.

It is an arithmetic number, because the mean of its divisors is an integer number (96474800).

Almost surely, 2^1912428147 is an apocalyptic number.

1912428147 is a deficient number, since it is larger than the sum of its proper divisors (1174765453).

1912428147 is a wasteful number, since it uses less digits than its factorization.

1912428147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30715.

The product of its digits is 32256, while the sum is 39.

The square root of 1912428147 is about 43731.3176911010. The cubic root of 1912428147 is about 1241.2569951606.

The spelling of 1912428147 in words is "one billion, nine hundred twelve million, four hundred twenty-eight thousand, one hundred forty-seven".