151990361 has 8 divisors (see below), whose sum is σ = 153297480. Its totient is φ = 150688512.

The previous prime is 151990331. The next prime is 151990369. The reversal of 151990361 is 163099151.

It can be written as a sum of positive squares in 4 ways, for example, as 71995225 + 79995136 = 8485^2 + 8944^2 .

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 151990361 - 2¹⁴ = 151973977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151990369) 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, 73895 + ... + 75923.

It is an arithmetic number, because the mean of its divisors is an integer number (19162185).

Almost surely, 2^151990361 is an apocalyptic number.

It is an amenable number.

151990361 is a deficient number, since it is larger than the sum of its proper divisors (1307119).

151990361 is a wasteful number, since it uses less digits than its factorization.

151990361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 151990361 is about 12328.4370866708. The cubic root of 151990361 is about 533.6690484868.

The spelling of 151990361 in words is "one hundred fifty-one million, nine hundred ninety thousand, three hundred sixty-one".