1345198770 has 48 divisors (see below), whose sum is σ = 3506419800. Its totient is φ = 357806592.

The previous prime is 1345198733. The next prime is 1345198781. The reversal of 1345198770 is 778915431.

It can be written as a sum of positive squares in 4 ways, for example, as 1334952369 + 10246401 = 36537^2 + 3201^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16906 + ... + 54554.

Almost surely, 2^1345198770 is an apocalyptic number.

1345198770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1345198770 is an abundant number, since it is smaller than the sum of its proper divisors (2161221030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1345198770 is a wasteful number, since it uses less digits than its factorization.

1345198770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38059 (or 38056 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 1345198770 is about 36676.9514818230. The cubic root of 1345198770 is about 1103.8976797499.

The spelling of 1345198770 in words is "one billion, three hundred forty-five million, one hundred ninety-eight thousand, seven hundred seventy".