1897960051 has 16 divisors (see below), whose sum is σ = 2097827424. Its totient is φ = 1706275584.

The previous prime is 1897960049. The next prime is 1897960079. The reversal of 1897960051 is 1500697981.

It is a happy number.

It is not a de Polignac number, because 1897960051 - 2¹ = 1897960049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1897959983 and 1897960010.

It is not an unprimeable number, because it can be changed into a prime (1897960021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84340 + ... + 104446.

It is an arithmetic number, because the mean of its divisors is an integer number (131114214).

Almost surely, 2^1897960051 is an apocalyptic number.

1897960051 is a deficient number, since it is larger than the sum of its proper divisors (199867373).

1897960051 is a wasteful number, since it uses less digits than its factorization.

1897960051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20310.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 1897960051 is about 43565.5833313408. The cubic root of 1897960051 is about 1238.1189070405.

The spelling of 1897960051 in words is "one billion, eight hundred ninety-seven million, nine hundred sixty thousand, fifty-one".