157746069 has 16 divisors (see below), whose sum is σ = 251675200. Its totient is φ = 97074288.

The previous prime is 157746049. The next prime is 157746089. The reversal of 157746069 is 960647751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (157746049) and next prime (157746089).

It is not a de Polignac number, because 157746069 - 2¹⁷ = 157614997 is a prime.

It is a super-2 number, since 2×157746069² = 49767644569905522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157746049) 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 15 ways as a sum of consecutive naturals, for example, 224359 + ... + 225060.

It is an arithmetic number, because the mean of its divisors is an integer number (15729700).

Almost surely, 2^157746069 is an apocalyptic number.

It is an amenable number.

157746069 is a deficient number, since it is larger than the sum of its proper divisors (93929131).

157746069 is a wasteful number, since it uses less digits than its factorization.

157746069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449441 (or 449435 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 157746069 is about 12559.7001954665. The cubic root of 157746069 is about 540.3222459325.

The spelling of 157746069 in words is "one hundred fifty-seven million, seven hundred forty-six thousand, sixty-nine".