1954697101 has 4 divisors (see below), whose sum is σ = 2233939552. Its totient is φ = 1675454652.

The previous prime is 1954697089. The next prime is 1954697119. The reversal of 1954697101 is 1017964591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1954697101 - 2⁹ = 1954696589 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 (1954692101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139621215 + ... + 139621228.

It is an arithmetic number, because the mean of its divisors is an integer number (558484888).

Almost surely, 2^1954697101 is an apocalyptic number.

It is an amenable number.

1954697101 is a deficient number, since it is larger than the sum of its proper divisors (279242451).

1954697101 is an equidigital number, since it uses as much as digits as its factorization.

1954697101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279242450.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1954697101 is about 44211.9565389273. The cubic root of 1954697101 is about 1250.3352916023.

The spelling of 1954697101 in words is "one billion, nine hundred fifty-four million, six hundred ninety-seven thousand, one hundred one".