1926438161 has 2 divisors, whose sum is σ = 1926438162. Its totient is φ = 1926438160.

The previous prime is 1926438121. The next prime is 1926438169. The reversal of 1926438161 is 1618346291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1650878161 + 275560000 = 40631^2 + 16600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1926438161 - 2⁶ = 1926438097 is a prime.

It is a super-2 number, since 2×1926438161² = 7422327976314123842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1926438169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963219080 + 963219081.

It is an arithmetic number, because the mean of its divisors is an integer number (963219081).

Almost surely, 2^1926438161 is an apocalyptic number.

It is an amenable number.

1926438161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1926438161 is an equidigital number, since it uses as much as digits as its factorization.

1926438161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 1926438161 is about 43891.2082426538. The cubic root of 1926438161 is about 1244.2806790856.

The spelling of 1926438161 in words is "one billion, nine hundred twenty-six million, four hundred thirty-eight thousand, one hundred sixty-one".