1542991198 has 8 divisors (see below), whose sum is σ = 2645127792. Its totient is φ = 661281936.

The previous prime is 1542991193. The next prime is 1542991207. The reversal of 1542991198 is 8911992451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542991193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55106815 + ... + 55106842.

It is an arithmetic number, because the mean of its divisors is an integer number (330640974).

Almost surely, 2^1542991198 is an apocalyptic number.

1542991198 is a deficient number, since it is larger than the sum of its proper divisors (1102136594).

1542991198 is a wasteful number, since it uses less digits than its factorization.

1542991198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110213666.

The product of its digits is 233280, while the sum is 49.

The square root of 1542991198 is about 39280.9266438560. The cubic root of 1542991198 is about 1155.5475369752.

The spelling of 1542991198 in words is "one billion, five hundred forty-two million, nine hundred ninety-one thousand, one hundred ninety-eight".