1260197158 has 8 divisors (see below), whose sum is σ = 2062140840. Its totient is φ = 572816880.

The previous prime is 1260197149. The next prime is 1260197179. The reversal of 1260197158 is 8517910621.

It is a happy number.

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

It is a super-4 number, since 4×1260197158⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1260197158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28640823 + ... + 28640866.

It is an arithmetic number, because the mean of its divisors is an integer number (257767605).

Almost surely, 2^1260197158 is an apocalyptic number.

1260197158 is a deficient number, since it is larger than the sum of its proper divisors (801943682).

1260197158 is a wasteful number, since it uses less digits than its factorization.

1260197158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57281702.

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1260197158 is about 35499.2557386771. The cubic root of 1260197158 is about 1080.1386304669.

The spelling of 1260197158 in words is "one billion, two hundred sixty million, one hundred ninety-seven thousand, one hundred fifty-eight".