1261050167 has 16 divisors (see below), whose sum is σ = 1381212000. Its totient is φ = 1144349184.

The previous prime is 1261050139. The next prime is 1261050173. The reversal of 1261050167 is 7610501621.

It is not a de Polignac number, because 1261050167 - 2¹² = 1261046071 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 (1261050127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204059 + ... + 210147.

It is an arithmetic number, because the mean of its divisors is an integer number (86325750).

Almost surely, 2^1261050167 is an apocalyptic number.

1261050167 is a deficient number, since it is larger than the sum of its proper divisors (120161833).

1261050167 is a wasteful number, since it uses less digits than its factorization.

1261050167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1261050167 is about 35511.2681694135. The cubic root of 1261050167 is about 1080.3822855062.

Adding to 1261050167 its reverse (7610501621), we get a palindrome (8871551788).

The spelling of 1261050167 in words is "one billion, two hundred sixty-one million, fifty thousand, one hundred sixty-seven".