981925151 has 8 divisors (see below), whose sum is σ = 1039965984. Its totient is φ = 923915520.

The previous prime is 981925121. The next prime is 981925159. The reversal of 981925151 is 151529189.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981925151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 981925099 and 981925108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981925159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98486 + ... + 107996.

It is an arithmetic number, because the mean of its divisors is an integer number (129995748).

Almost surely, 2^981925151 is an apocalyptic number.

981925151 is a deficient number, since it is larger than the sum of its proper divisors (58040833).

981925151 is a wasteful number, since it uses less digits than its factorization.

981925151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15601.

The product of its digits is 32400, while the sum is 41.

The square root of 981925151 is about 31335.6849454420. The cubic root of 981925151 is about 993.9383813539.

The spelling of 981925151 in words is "nine hundred eighty-one million, nine hundred twenty-five thousand, one hundred fifty-one".