151949 has 8 divisors (see below), whose sum is σ = 177600. Its totient is φ = 129948.

The previous prime is 151939. The next prime is 151967. The reversal of 151949 is 949151.

It is not a de Polignac number, because 151949 - 2⁸ = 151693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 151949.

It is not an unprimeable number, because it can be changed into a prime (151909) 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, 122 + ... + 564.

It is an arithmetic number, because the mean of its divisors is an integer number (22200).

2¹⁵¹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

151949 is a deficient number, since it is larger than the sum of its proper divisors (25651).

151949 is an frugal number, since it uses more digits than its factorization.

151949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 450 counting only the distinct ones).

The product of its digits is 1620, while the sum is 29.

The square root of 151949 is about 389.8063621851. The cubic root of 151949 is about 53.3620635136.

The spelling of 151949 in words is "one hundred fifty-one thousand, nine hundred forty-nine".