1057749194 has 8 divisors (see below), whose sum is σ = 1620381888. Its totient is φ = 517621900.

The previous prime is 1057749193. The next prime is 1057749223. The reversal of 1057749194 is 4919477501.

It is a happy number.

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

It is a super-2 number, since 2×1057749194² = 2237666714815299272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1057749193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626232 + ... + 5626419.

It is an arithmetic number, because the mean of its divisors is an integer number (202547736).

Almost surely, 2^1057749194 is an apocalyptic number.

1057749194 is a deficient number, since it is larger than the sum of its proper divisors (562632694).

1057749194 is a wasteful number, since it uses less digits than its factorization.

1057749194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11252700.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 1057749194 is about 32523.0563446918. The cubic root of 1057749194 is about 1018.8906284144.

The spelling of 1057749194 in words is "one billion, fifty-seven million, seven hundred forty-nine thousand, one hundred ninety-four".