151020993 has 16 divisors (see below), whose sum is σ = 203120640. Its totient is φ = 99805776.

The previous prime is 151020971. The next prime is 151021001. The reversal of 151020993 is 399020151.

It is not a de Polignac number, because 151020993 - 2¹² = 151016897 is a prime.

It is a super-3 number, since 3×151020993³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 151020993.

It is not an unprimeable number, because it can be changed into a prime (151020913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248496 + ... + 249102.

It is an arithmetic number, because the mean of its divisors is an integer number (12695040).

Almost surely, 2^151020993 is an apocalyptic number.

It is an amenable number.

151020993 is a deficient number, since it is larger than the sum of its proper divisors (52099647).

151020993 is a wasteful number, since it uses less digits than its factorization.

151020993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 151020993 is about 12289.0598908135. The cubic root of 151020993 is about 532.5320785630.

The spelling of 151020993 in words is "one hundred fifty-one million, twenty thousand, nine hundred ninety-three".