1351885970 has 16 divisors (see below), whose sum is σ = 2460737880. Its totient is φ = 534678144.

The previous prime is 1351885949. The next prime is 1351885979. The reversal of 1351885970 is 795881531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 598438369 + 753447601 = 24463^2 + 27449^2 .

It is not an unprimeable number, because it can be changed into a prime (1351885979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758597 + ... + 760376.

Almost surely, 2^1351885970 is an apocalyptic number.

1351885970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1351885970 is a deficient number, since it is larger than the sum of its proper divisors (1108851910).

1351885970 is a wasteful number, since it uses less digits than its factorization.

1351885970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519069.

The product of its (nonzero) digits is 302400, while the sum is 47.

The square root of 1351885970 is about 36768.0019854221. The cubic root of 1351885970 is about 1105.7238747714.

The spelling of 1351885970 in words is "one billion, three hundred fifty-one million, eight hundred eighty-five thousand, nine hundred seventy".