1000557146 has 4 divisors (see below), whose sum is σ = 1500835722. Its totient is φ = 500278572.

The previous prime is 1000557143. The next prime is 1000557179. The reversal of 1000557146 is 6417550001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6417550001 = 797 ⋅8052133.

It can be written as a sum of positive squares in only one way, i.e., 905709025 + 94848121 = 30095^2 + 9739^2 .

It is a super-2 number, since 2×1000557146² = 2002229204823330632, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000557143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250139285 + ... + 250139288.

Almost surely, 2^1000557146 is an apocalyptic number.

1000557146 is a deficient number, since it is larger than the sum of its proper divisors (500278576).

1000557146 is an equidigital number, since it uses as much as digits as its factorization.

1000557146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500278575.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1000557146 is about 31631.5846267619. The cubic root of 1000557146 is about 1000.1856808538.

The spelling of 1000557146 in words is "one billion, five hundred fifty-seven thousand, one hundred forty-six".