149961773 has 8 divisors (see below), whose sum is σ = 161651616. Its totient is φ = 138294000.

The previous prime is 149961767. The next prime is 149961781. The reversal of 149961773 is 377169941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149961773 - 2⁸ = 149961517 is a prime.

It is a super-2 number, since 2×149961773² = 44977066722607058, 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 (149961733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10298 + ... + 20148.

It is an arithmetic number, because the mean of its divisors is an integer number (20206452).

Almost surely, 2^149961773 is an apocalyptic number.

149961773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149961773 is a deficient number, since it is larger than the sum of its proper divisors (11689843).

149961773 is a wasteful number, since it uses less digits than its factorization.

149961773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11035.

The product of its digits is 285768, while the sum is 47.

The square root of 149961773 is about 12245.8880037342. Note that the first 3 decimals coincide. The cubic root of 149961773 is about 531.2841449242.

The spelling of 149961773 in words is "one hundred forty-nine million, nine hundred sixty-one thousand, seven hundred seventy-three".