1401669191 has 8 divisors (see below), whose sum is σ = 1509807264. Its totient is φ = 1293576480.

The previous prime is 1401669179. The next prime is 1401669221. The reversal of 1401669191 is 1919661041.

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

It is a cyclic number.

It is not a de Polignac number, because 1401669191 - 2¹⁴ = 1401652807 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 (1401669161) 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, 80345 + ... + 96221.

It is an arithmetic number, because the mean of its divisors is an integer number (188725908).

Almost surely, 2^1401669191 is an apocalyptic number.

1401669191 is a deficient number, since it is larger than the sum of its proper divisors (108138073).

1401669191 is a wasteful number, since it uses less digits than its factorization.

1401669191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22681.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1401669191 is about 37438.8727260851. The cubic root of 1401669191 is about 1119.1333620549.

The spelling of 1401669191 in words is "one billion, four hundred one million, six hundred sixty-nine thousand, one hundred ninety-one".