145773619 has 2 divisors, whose sum is σ = 145773620. Its totient is φ = 145773618.

The previous prime is 145773611. The next prime is 145773679. The reversal of 145773619 is 916377541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145773619 - 2³ = 145773611 is a prime.

It is a super-2 number, since 2×145773619² = 42499895992714322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145773611) by changing a digit.

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 as a sum of consecutive naturals, namely, 72886809 + 72886810.

It is an arithmetic number, because the mean of its divisors is an integer number (72886810).

Almost surely, 2^145773619 is an apocalyptic number.

145773619 is a deficient number, since it is larger than the sum of its proper divisors (1).

145773619 is an equidigital number, since it uses as much as digits as its factorization.

145773619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 145773619 is about 12073.6746270553. The cubic root of 145773619 is about 526.2914467199.

It can be divided in two parts, 1457 and 73619, that added together give a square (75076 = 274²).

The spelling of 145773619 in words is "one hundred forty-five million, seven hundred seventy-three thousand, six hundred nineteen".