151705949 has 4 divisors (see below), whose sum is σ = 152583036. Its totient is φ = 150828864.

The previous prime is 151705927. The next prime is 151705951. The reversal of 151705949 is 949507151.

151705949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 126405049 + 25300900 = 11243^2 + 5030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151705949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151705979) 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, 438284 + ... + 438629.

It is an arithmetic number, because the mean of its divisors is an integer number (38145759).

Almost surely, 2^151705949 is an apocalyptic number.

It is an amenable number.

151705949 is a deficient number, since it is larger than the sum of its proper divisors (877087).

151705949 is an equidigital number, since it uses as much as digits as its factorization.

151705949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877086.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 151705949 is about 12316.8968900450. The cubic root of 151705949 is about 533.3359645269.

The spelling of 151705949 in words is "one hundred fifty-one million, seven hundred five thousand, nine hundred forty-nine".