1901427101 has 16 divisors (see below), whose sum is σ = 2302038144. Its totient is φ = 1533156864.

The previous prime is 1901427049. The next prime is 1901427113. The reversal of 1901427101 is 1017241091.

It is a cyclic number.

It is not a de Polignac number, because 1901427101 - 2⁶ = 1901427037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901427901) 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, 464801 + ... + 468873.

It is an arithmetic number, because the mean of its divisors is an integer number (143877384).

Almost surely, 2^1901427101 is an apocalyptic number.

It is an amenable number.

1901427101 is a deficient number, since it is larger than the sum of its proper divisors (400611043).

1901427101 is a wasteful number, since it uses less digits than its factorization.

1901427101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8020.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1901427101 is about 43605.3563338267. The cubic root of 1901427101 is about 1238.8723491361.

Adding to 1901427101 its reverse (1017241091), we get a palindrome (2918668192).

The spelling of 1901427101 in words is "one billion, nine hundred one million, four hundred twenty-seven thousand, one hundred one".