1071154198 has 4 divisors (see below), whose sum is σ = 1606731300. Its totient is φ = 535577098.

The previous prime is 1071154193. The next prime is 1071154223. The reversal of 1071154198 is 8914511701.

It is a happy number.

1071154198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8914511701 = 5827 ⋅1529863.

It is a super-2 number, since 2×1071154198² = 2294742631786046408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071154193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267788548 + ... + 267788551.

It is an arithmetic number, because the mean of its divisors is an integer number (401682825).

Almost surely, 2^1071154198 is an apocalyptic number.

1071154198 is a deficient number, since it is larger than the sum of its proper divisors (535577102).

1071154198 is an equidigital number, since it uses as much as digits as its factorization.

1071154198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535577101.

The product of its (nonzero) digits is 10080, while the sum is 37.

The square root of 1071154198 is about 32728.4921436964. The cubic root of 1071154198 is about 1023.1767541758.

Adding to 1071154198 its reverse (8914511701), we get a palindrome (9985665899).

The spelling of 1071154198 in words is "one billion, seventy-one million, one hundred fifty-four thousand, one hundred ninety-eight".