1487784401 has 2 divisors, whose sum is σ = 1487784402. Its totient is φ = 1487784400.

The previous prime is 1487784383. The next prime is 1487784413. The reversal of 1487784401 is 1044877841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181709376 + 306075025 = 34376^2 + 17495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1487784401 - 2¹⁰ = 1487783377 is a prime.

It is a super-3 number, since 3×1487784401³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1487784901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743892200 + 743892201.

It is an arithmetic number, because the mean of its divisors is an integer number (743892201).

Almost surely, 2^1487784401 is an apocalyptic number.

It is an amenable number.

1487784401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487784401 is an equidigital number, since it uses as much as digits as its factorization.

1487784401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 1487784401 is about 38571.8083708814. The cubic root of 1487784401 is about 1141.5983532700.

The spelling of 1487784401 in words is "one billion, four hundred eighty-seven million, seven hundred eighty-four thousand, four hundred one".