2973557385 has 20 divisors (see below), whose sum is σ = 5330377668. Its totient is φ = 1585897056.

The previous prime is 2973557381. The next prime is 2973557441. The reversal of 2973557385 is 5837553792.

2973557385 is a `hidden beast` number, since 2 + 9 + 7 + 3 + 557 + 3 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1771063056 + 1202494329 = 42084^2 + 34677^2 .

It is not a de Polignac number, because 2973557385 - 2² = 2973557381 is a prime.

It is a super-3 number, since 3×2973557385³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2973557381) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3670654 + ... + 3671463.

Almost surely, 2^2973557385 is an apocalyptic number.

It is an amenable number.

2973557385 is a deficient number, since it is larger than the sum of its proper divisors (2356820283).

2973557385 is an equidigital number, since it uses as much as digits as its factorization.

2973557385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342134 (or 7342125 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 54.

The square root of 2973557385 is about 54530.3345395936. The cubic root of 2973557385 is about 1437.9996313390. Note that the first 3 decimals are identical.

The spelling of 2973557385 in words is "two billion, nine hundred seventy-three million, five hundred fifty-seven thousand, three hundred eighty-five".