149840831 has 16 divisors (see below), whose sum is σ = 173184000. Its totient is φ = 126992448.

The previous prime is 149840819. The next prime is 149840833. The reversal of 149840831 is 138048941.

It is a cyclic number.

It is not a de Polignac number, because 149840831 - 2¹⁸ = 149578687 is a prime.

It is a super-2 number, since 2×149840831² = 44904549269541122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149840833) 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, 366155 + ... + 366563.

It is an arithmetic number, because the mean of its divisors is an integer number (10824000).

Almost surely, 2^149840831 is an apocalyptic number.

149840831 is a deficient number, since it is larger than the sum of its proper divisors (23343169).

149840831 is a wasteful number, since it uses less digits than its factorization.

149840831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 149840831 is about 12240.9489419734. The cubic root of 149840831 is about 531.1412821866.

The spelling of 149840831 in words is "one hundred forty-nine million, eight hundred forty thousand, eight hundred thirty-one".