1617880403 has 2 divisors, whose sum is σ = 1617880404. Its totient is φ = 1617880402.

The previous prime is 1617880379. The next prime is 1617880409. The reversal of 1617880403 is 3040887161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1617880403 - 2¹⁶ = 1617814867 is a prime.

It is a super-2 number, since 2×1617880403² = 5235073996822884818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1617880409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808940201 + 808940202.

It is an arithmetic number, because the mean of its divisors is an integer number (808940202).

Almost surely, 2^1617880403 is an apocalyptic number.

1617880403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617880403 is an equidigital number, since it uses as much as digits as its factorization.

1617880403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1617880403 is about 40222.8840711354. The cubic root of 1617880403 is about 1173.9478501698.

The spelling of 1617880403 in words is "one billion, six hundred seventeen million, eight hundred eighty thousand, four hundred three".