1973545101 has 16 divisors (see below), whose sum is σ = 3189568320. Its totient is φ = 1196087760.

The previous prime is 1973545051. The next prime is 1973545141. The reversal of 1973545101 is 1015453791.

It is a happy number.

1973545101 is a `hidden beast` number, since 1 + 9 + 7 + 3 + 545 + 101 = 666.

It is not a de Polignac number, because 1973545101 - 2⁷ = 1973544973 is a prime.

It is a super-2 number, since 2×1973545101² = 7789760531362200402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973545141) 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, 3322170 + ... + 3322763.

It is an arithmetic number, because the mean of its divisors is an integer number (199348020).

Almost surely, 2^1973545101 is an apocalyptic number.

1973545101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1973545101 is a deficient number, since it is larger than the sum of its proper divisors (1216023219).

1973545101 is a wasteful number, since it uses less digits than its factorization.

1973545101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644953 (or 6644947 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1973545101 is about 44424.6001782796. The cubic root of 1973545101 is about 1254.3411939875.

Adding to 1973545101 its reverse (1015453791), we get a palindrome (2988998892).

The spelling of 1973545101 in words is "one billion, nine hundred seventy-three million, five hundred forty-five thousand, one hundred one".