1204117157 has 8 divisors (see below), whose sum is σ = 1281557016. Its totient is φ = 1127411712.

The previous prime is 1204117141. The next prime is 1204117169. The reversal of 1204117157 is 7517114021.

It can be written as a sum of positive squares in 4 ways, for example, as 383924836 + 820192321 = 19594^2 + 28639^2 .

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

It is not a de Polignac number, because 1204117157 - 2⁴ = 1204117141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204114157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180218 + ... + 186779.

It is an arithmetic number, because the mean of its divisors is an integer number (160194627).

Almost surely, 2^1204117157 is an apocalyptic number.

1204117157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1204117157 is a deficient number, since it is larger than the sum of its proper divisors (77439859).

1204117157 is a wasteful number, since it uses less digits than its factorization.

1204117157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367207.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 1204117157 is about 34700.3913090328. The cubic root of 1204117157 is about 1063.8724964164.

The spelling of 1204117157 in words is "one billion, two hundred four million, one hundred seventeen thousand, one hundred fifty-seven".