157444973 has 32 divisors (see below), whose sum is σ = 201864960. Its totient is φ = 119669760.

The previous prime is 157444967. The next prime is 157444997. The reversal of 157444973 is 379444751.

It is a happy number.

It is not a de Polignac number, because 157444973 - 2⁴ = 157444957 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 (157444933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147863 + ... + 148923.

It is an arithmetic number, because the mean of its divisors is an integer number (6308280).

Almost surely, 2^157444973 is an apocalyptic number.

It is an amenable number.

157444973 is a deficient number, since it is larger than the sum of its proper divisors (44419987).

157444973 is a wasteful number, since it uses less digits than its factorization.

157444973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157.

The product of its digits is 423360, while the sum is 44.

The square root of 157444973 is about 12547.7078783338. The cubic root of 157444973 is about 539.9782490096.

The spelling of 157444973 in words is "one hundred fifty-seven million, four hundred forty-four thousand, nine hundred seventy-three".