145849590 has 24 divisors (see below), whose sum is σ = 379209168. Its totient is φ = 38893200.

The previous prime is 145849559. The next prime is 145849603. The reversal of 145849590 is 95948541.

145849590 is a `hidden beast` number, since 1 + 4 + 58 + 4 + 9 + 590 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 810186 + ... + 810365.

It is an arithmetic number, because the mean of its divisors is an integer number (15800382).

Almost surely, 2^145849590 is an apocalyptic number.

145849590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145849590 is an abundant number, since it is smaller than the sum of its proper divisors (233359578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145849590 is a wasteful number, since it uses less digits than its factorization.

145849590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620564 (or 1620561 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 145849590 is about 12076.8203596808. The cubic root of 145849590 is about 526.3828577356.

The spelling of 145849590 in words is "one hundred forty-five million, eight hundred forty-nine thousand, five hundred ninety".