1970156790 has 128 divisors (see below), whose sum is σ = 6019200000. Its totient is φ = 449203968.

The previous prime is 1970156779. The next prime is 1970156791. The reversal of 1970156790 is 976510791.

1970156790 is a `hidden beast` number, since 19 + 70 + 1 + 567 + 9 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970156791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 942066 + ... + 944154.

It is an arithmetic number, because the mean of its divisors is an integer number (47025000).

Almost surely, 2^1970156790 is an apocalyptic number.

1970156790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1970156790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3009600000).

1970156790 is an abundant number, since it is smaller than the sum of its proper divisors (4049043210).

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

1970156790 is a wasteful number, since it uses less digits than its factorization.

1970156790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 45.

The square root of 1970156790 is about 44386.4482697140. The cubic root of 1970156790 is about 1253.6229378457.

The spelling of 1970156790 in words is "one billion, nine hundred seventy million, one hundred fifty-six thousand, seven hundred ninety".