145854638 has 8 divisors (see below), whose sum is σ = 228294288. Its totient is φ = 69756544.

The previous prime is 145854623. The next prime is 145854641. The reversal of 145854638 is 836458541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145854638² = 42547150852222088, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585331 + ... + 1585422.

It is an arithmetic number, because the mean of its divisors is an integer number (28536786).

Almost surely, 2^145854638 is an apocalyptic number.

145854638 is a deficient number, since it is larger than the sum of its proper divisors (82439650).

145854638 is a wasteful number, since it uses less digits than its factorization.

145854638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170778.

The product of its digits is 460800, while the sum is 44.

The square root of 145854638 is about 12077.0293532805. The cubic root of 145854638 is about 526.3889305444.

The spelling of 145854638 in words is "one hundred forty-five million, eight hundred fifty-four thousand, six hundred thirty-eight".