1889695401 has 32 divisors (see below), whose sum is σ = 2919960576. Its totient is φ = 1074336000.

The previous prime is 1889695399. The next prime is 1889695439. The reversal of 1889695401 is 1045969881.

It is not a de Polignac number, because 1889695401 - 2¹ = 1889695399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1889695471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169056 + ... + 179886.

It is an arithmetic number, because the mean of its divisors is an integer number (91248768).

Almost surely, 2^1889695401 is an apocalyptic number.

1889695401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1889695401 is a deficient number, since it is larger than the sum of its proper divisors (1030265175).

1889695401 is a wasteful number, since it uses less digits than its factorization.

1889695401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11173.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 1889695401 is about 43470.6268760873. The cubic root of 1889695401 is about 1236.3191663010.

The spelling of 1889695401 in words is "one billion, eight hundred eighty-nine million, six hundred ninety-five thousand, four hundred one".