1954728401 has 2 divisors, whose sum is σ = 1954728402. Its totient is φ = 1954728400.

The previous prime is 1954728317. The next prime is 1954728427. The reversal of 1954728401 is 1048274591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1953728401 + 1000000 = 44201^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954728401 - 2¹⁰ = 1954727377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954728431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977364200 + 977364201.

It is an arithmetic number, because the mean of its divisors is an integer number (977364201).

Almost surely, 2^1954728401 is an apocalyptic number.

It is an amenable number.

1954728401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954728401 is an equidigital number, since it uses as much as digits as its factorization.

1954728401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1954728401 is about 44212.3105141543. The cubic root of 1954728401 is about 1250.3419653192.

The spelling of 1954728401 in words is "one billion, nine hundred fifty-four million, seven hundred twenty-eight thousand, four hundred one".