145194377 has 4 divisors (see below), whose sum is σ = 151507200. Its totient is φ = 138881556.

The previous prime is 145194373. The next prime is 145194389. The reversal of 145194377 is 773491541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145194377 - 2² = 145194373 is a prime.

It is a super-2 number, since 2×145194377² = 42162814224836258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145194373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3156377 + ... + 3156422.

It is an arithmetic number, because the mean of its divisors is an integer number (37876800).

Almost surely, 2^145194377 is an apocalyptic number.

It is an amenable number.

145194377 is a deficient number, since it is larger than the sum of its proper divisors (6312823).

145194377 is an equidigital number, since it uses as much as digits as its factorization.

145194377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312822.

The product of its digits is 105840, while the sum is 41.

The square root of 145194377 is about 12049.6629413440. The cubic root of 145194377 is about 525.5934356822.

The spelling of 145194377 in words is "one hundred forty-five million, one hundred ninety-four thousand, three hundred seventy-seven".