181462401 has 6 divisors (see below), whose sum is σ = 262112370. Its totient is φ = 120974928.

The previous prime is 181462399. The next prime is 181462409. The reversal of 181462401 is 104264181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 104040000 + 77422401 = 10200^2 + 8799^2 .

It is not a de Polignac number, because 181462401 - 2¹ = 181462399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (181462409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10081236 + ... + 10081253.

It is an arithmetic number, because the mean of its divisors is an integer number (43685395).

Almost surely, 2^181462401 is an apocalyptic number.

It is an amenable number.

181462401 is a deficient number, since it is larger than the sum of its proper divisors (80649969).

181462401 is a wasteful number, since it uses less digits than its factorization.

181462401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20162495 (or 20162492 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 181462401 is about 13470.7980832614. The cubic root of 181462401 is about 566.1465749735.

The spelling of 181462401 in words is "one hundred eighty-one million, four hundred sixty-two thousand, four hundred one".