1267041601 has 8 divisors (see below), whose sum is σ = 1449473984. Its totient is φ = 1084965840.

The previous prime is 1267041599. The next prime is 1267041649. The reversal of 1267041601 is 1061407621.

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

It is not a de Polignac number, because 1267041601 - 2¹ = 1267041599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1267041601.

It is not an unprimeable number, because it can be changed into a prime (1267045601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81495 + ... + 95788.

It is an arithmetic number, because the mean of its divisors is an integer number (181184248).

Almost surely, 2^1267041601 is an apocalyptic number.

It is an amenable number.

1267041601 is a deficient number, since it is larger than the sum of its proper divisors (182432383).

1267041601 is a wasteful number, since it uses less digits than its factorization.

1267041601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178311.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1267041601 is about 35595.5278230286. The cubic root of 1267041601 is about 1082.0906010168.

The spelling of 1267041601 in words is "one billion, two hundred sixty-seven million, forty-one thousand, six hundred one".