1398822351 has 16 divisors (see below), whose sum is σ = 1971926400. Its totient is φ = 879566688.

The previous prime is 1398822343. The next prime is 1398822361. The reversal of 1398822351 is 1532288931.

It is a happy number.

It is not a de Polignac number, because 1398822351 - 2³ = 1398822343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398822301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41116 + ... + 66993.

It is an arithmetic number, because the mean of its divisors is an integer number (123245400).

Almost surely, 2^1398822351 is an apocalyptic number.

1398822351 is a deficient number, since it is larger than the sum of its proper divisors (573104049).

1398822351 is a wasteful number, since it uses less digits than its factorization.

1398822351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108358.

The product of its digits is 103680, while the sum is 42.

The square root of 1398822351 is about 37400.8335602296. The cubic root of 1398822351 is about 1118.3751819666.

The spelling of 1398822351 in words is "one billion, three hundred ninety-eight million, eight hundred twenty-two thousand, three hundred fifty-one".