1931970345 has 16 divisors (see below), whose sum is σ = 3141828672. Its totient is φ = 1013492160.

The previous prime is 1931970329. The next prime is 1931970361. The reversal of 1931970345 is 5430791391.

1931970345 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1931970329) and next prime (1931970361).

It is not a de Polignac number, because 1931970345 - 2⁴ = 1931970329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1931970297 and 1931970306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054807 + ... + 1056636.

It is an arithmetic number, because the mean of its divisors is an integer number (196364292).

Almost surely, 2^1931970345 is an apocalyptic number.

1931970345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1931970345 is a deficient number, since it is larger than the sum of its proper divisors (1209858327).

1931970345 is a wasteful number, since it uses less digits than its factorization.

1931970345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111512.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 1931970345 is about 43954.1846130718. The cubic root of 1931970345 is about 1245.4706144902.

The spelling of 1931970345 in words is "one billion, nine hundred thirty-one million, nine hundred seventy thousand, three hundred forty-five".