145992819 has 16 divisors (see below), whose sum is σ = 224167680. Its totient is φ = 82786080.

The previous prime is 145992811. The next prime is 145992823. The reversal of 145992819 is 918299541.

It is not a de Polignac number, because 145992819 - 2³ = 145992811 is a prime.

It is a super-2 number, since 2×145992819² = 42627806399133522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145992811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23784 + ... + 29285.

It is an arithmetic number, because the mean of its divisors is an integer number (14010480).

Almost surely, 2^145992819 is an apocalyptic number.

145992819 is a deficient number, since it is larger than the sum of its proper divisors (78174861).

145992819 is a wasteful number, since it uses less digits than its factorization.

145992819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53210.

The product of its digits is 233280, while the sum is 48.

The square root of 145992819 is about 12082.7488180463. The cubic root of 145992819 is about 526.5551096751. Note that the first 3 decimals are identical.

The spelling of 145992819 in words is "one hundred forty-five million, nine hundred ninety-two thousand, eight hundred nineteen".