1157073447 has 8 divisors (see below), whose sum is σ = 1545334000. Its totient is φ = 770097600.

The previous prime is 1157073427. The next prime is 1157073461. The reversal of 1157073447 is 7443707511.

1157073447 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1157073447 - 2¹⁵ = 1157040679 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 (1157073427) 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, 319072 + ... + 322677.

It is an arithmetic number, because the mean of its divisors is an integer number (193166750).

Almost surely, 2^1157073447 is an apocalyptic number.

1157073447 is a deficient number, since it is larger than the sum of its proper divisors (388260553).

1157073447 is an equidigital number, since it uses as much as digits as its factorization.

1157073447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642353.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 1157073447 is about 34015.7823223280. The cubic root of 1157073447 is about 1049.8332152322.

The spelling of 1157073447 in words is "one billion, one hundred fifty-seven million, seventy-three thousand, four hundred forty-seven".