2406435381 has 12 divisors (see below), whose sum is σ = 3972528352. Its totient is φ = 1375105896.

The previous prime is 2406435379. The next prime is 2406435397. The reversal of 2406435381 is 1835346042.

2406435381 is a `hidden beast` number, since 2 + 4 + 0 + 643 + 5 + 3 + 8 + 1 = 666.

It is not a de Polignac number, because 2406435381 - 2¹ = 2406435379 is a prime.

It is a super-2 number, since 2×2406435381² = 11581862485857230322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2406435371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19098631 + ... + 19098756.

Almost surely, 2^2406435381 is an apocalyptic number.

2406435381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2406435381 is a deficient number, since it is larger than the sum of its proper divisors (1566092971).

2406435381 is a wasteful number, since it uses less digits than its factorization.

2406435381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38197400 (or 38197397 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2406435381 is about 49055.4317175988. The cubic root of 2406435381 is about 1340.0615144034.

The spelling of 2406435381 in words is "two billion, four hundred six million, four hundred thirty-five thousand, three hundred eighty-one".