1354877921 has 2 divisors, whose sum is σ = 1354877922. Its totient is φ = 1354877920.

The previous prime is 1354877911. The next prime is 1354877929. The reversal of 1354877921 is 1297784531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1350195025 + 4682896 = 36745^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354877921 - 2²² = 1350683617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1354877929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677438960 + 677438961.

It is an arithmetic number, because the mean of its divisors is an integer number (677438961).

Almost surely, 2^1354877921 is an apocalyptic number.

It is an amenable number.

1354877921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354877921 is an equidigital number, since it uses as much as digits as its factorization.

1354877921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 47.

The square root of 1354877921 is about 36808.6663844264. Note that the first 3 decimals coincide. The cubic root of 1354877921 is about 1106.5389913654.

The spelling of 1354877921 in words is "one billion, three hundred fifty-four million, eight hundred seventy-seven thousand, nine hundred twenty-one".