145011998 has 8 divisors (see below), whose sum is σ = 222823440. Its totient is φ = 70737520.

The previous prime is 145011959. The next prime is 145012013. The reversal of 145011998 is 899110541.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 884138 + ... + 884301.

It is an arithmetic number, because the mean of its divisors is an integer number (27852930).

Almost surely, 2^145011998 is an apocalyptic number.

145011998 is a deficient number, since it is larger than the sum of its proper divisors (77811442).

145011998 is a wasteful number, since it uses less digits than its factorization.

145011998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768482.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 145011998 is about 12042.0927583207. The cubic root of 145011998 is about 525.3732770904.

The spelling of 145011998 in words is "one hundred forty-five million, eleven thousand, nine hundred ninety-eight".