1970153899 has 4 divisors (see below), whose sum is σ = 2251604464. Its totient is φ = 1688703336.

The previous prime is 1970153873. The next prime is 1970153917. The reversal of 1970153899 is 9983510791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1970153899 - 2¹¹ = 1970151851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1970153839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140725272 + ... + 140725285.

It is an arithmetic number, because the mean of its divisors is an integer number (562901116).

Almost surely, 2^1970153899 is an apocalyptic number.

1970153899 is a deficient number, since it is larger than the sum of its proper divisors (281450565).

1970153899 is an equidigital number, since it uses as much as digits as its factorization.

1970153899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281450564.

The product of its (nonzero) digits is 612360, while the sum is 52.

The square root of 1970153899 is about 44386.4157034559. The cubic root of 1970153899 is about 1253.6223246583.

The spelling of 1970153899 in words is "one billion, nine hundred seventy million, one hundred fifty-three thousand, eight hundred ninety-nine".