145337994 has 24 divisors (see below), whose sum is σ = 319336992. Its totient is φ = 47763240.

The previous prime is 145337971. The next prime is 145337999. The reversal of 145337994 is 499733541.

It is a super-2 number, since 2×145337994² = 42246264999888072, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145337999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55584 + ... + 58139.

It is an arithmetic number, because the mean of its divisors is an integer number (13305708).

Almost surely, 2^145337994 is an apocalyptic number.

145337994 is an abundant number, since it is smaller than the sum of its proper divisors (173998998).

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

145337994 is a wasteful number, since it uses less digits than its factorization.

145337994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113802 (or 113799 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 145337994 is about 12055.6208467254. The cubic root of 145337994 is about 525.7666730569.

The spelling of 145337994 in words is "one hundred forty-five million, three hundred thirty-seven thousand, nine hundred ninety-four".