151983761 has 4 divisors (see below), whose sum is σ = 155690724. Its totient is φ = 148276800.

The previous prime is 151983743. The next prime is 151983773. The reversal of 151983761 is 167389151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89889361 + 62094400 = 9481^2 + 7880^2 .

It is a cyclic number.

It is not a de Polignac number, because 151983761 - 2⁶ = 151983697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3706921 = 151983761 / (1 + 5 + 1 + 9 + 8 + 3 + 7 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151983721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853420 + ... + 1853501.

It is an arithmetic number, because the mean of its divisors is an integer number (38922681).

Almost surely, 2^151983761 is an apocalyptic number.

It is an amenable number.

151983761 is a deficient number, since it is larger than the sum of its proper divisors (3706963).

151983761 is an equidigital number, since it uses as much as digits as its factorization.

151983761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706962.

The product of its digits is 45360, while the sum is 41.

The square root of 151983761 is about 12328.1694099327. The cubic root of 151983761 is about 533.6613237279.

The spelling of 151983761 in words is "one hundred fifty-one million, nine hundred eighty-three thousand, seven hundred sixty-one".