147045981 has 8 divisors (see below), whose sum is σ = 196134624. Its totient is φ = 97994000.

The previous prime is 147045961. The next prime is 147045991. The reversal of 147045981 is 189540741.

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

It is a cyclic number.

It is not a de Polignac number, because 147045981 - 2⁵ = 147045949 is a prime.

It is a super-2 number, since 2×147045981² = 43245041056504722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147045911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215 + ... + 17291.

It is an arithmetic number, because the mean of its divisors is an integer number (24516828).

Almost surely, 2^147045981 is an apocalyptic number.

It is an amenable number.

147045981 is a deficient number, since it is larger than the sum of its proper divisors (49088643).

147045981 is a wasteful number, since it uses less digits than its factorization.

147045981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18331.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 147045981 is about 12126.2517292031. The cubic root of 147045981 is about 527.8182304465.

The spelling of 147045981 in words is "one hundred forty-seven million, forty-five thousand, nine hundred eighty-one".