2354203981 has 2 divisors, whose sum is σ = 2354203982. Its totient is φ = 2354203980.

The previous prime is 2354203961. The next prime is 2354203993. The reversal of 2354203981 is 1893024532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1783710756 + 570493225 = 42234^2 + 23885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2354203981 - 2²¹ = 2352106829 is a prime.

It is a super-2 number, since 2×2354203981² = 11084552768312496722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2354203981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2354203961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177101990 + 1177101991.

It is an arithmetic number, because the mean of its divisors is an integer number (1177101991).

Almost surely, 2^2354203981 is an apocalyptic number.

It is an amenable number.

2354203981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2354203981 is an equidigital number, since it uses as much as digits as its factorization.

2354203981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2354203981 is about 48520.1399523950. The cubic root of 2354203981 is about 1330.2952179756.

The spelling of 2354203981 in words is "two billion, three hundred fifty-four million, two hundred three thousand, nine hundred eighty-one".