146819457 has 12 divisors (see below), whose sum is σ = 213001620. Its totient is φ = 97450848.

The previous prime is 146819443. The next prime is 146819459. The reversal of 146819457 is 754918641.

It can be written as a sum of positive squares in 2 ways, for example, as 70711281 + 76108176 = 8409^2 + 8724^2 .

It is not a de Polignac number, because 146819457 - 2¹⁰ = 146818433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146819459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33558 + ... + 37679.

It is an arithmetic number, because the mean of its divisors is an integer number (17750135).

Almost surely, 2^146819457 is an apocalyptic number.

It is an amenable number.

146819457 is a deficient number, since it is larger than the sum of its proper divisors (66182163).

146819457 is a wasteful number, since it uses less digits than its factorization.

146819457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71472 (or 71469 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 146819457 is about 12116.9078976445. The cubic root of 146819457 is about 527.5470568893.

The spelling of 146819457 in words is "one hundred forty-six million, eight hundred nineteen thousand, four hundred fifty-seven".