1351079890 has 16 divisors (see below), whose sum is σ = 2434732632. Its totient is φ = 539812224.

The previous prime is 1351079887. The next prime is 1351079921. The reversal of 1351079890 is 989701531.

It can be written as a sum of positive squares in 4 ways, for example, as 1160833041 + 190246849 = 34071^2 + 13793^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68259 + ... + 85798.

Almost surely, 2^1351079890 is an apocalyptic number.

1351079890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1351079890 is a deficient number, since it is larger than the sum of its proper divisors (1083652742).

1351079890 is a wasteful number, since it uses less digits than its factorization.

1351079890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154941.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1351079890 is about 36757.0386456798. The cubic root of 1351079890 is about 1105.5040635522.

The spelling of 1351079890 in words is "one billion, three hundred fifty-one million, seventy-nine thousand, eight hundred ninety".