1972942090 has 16 divisors (see below), whose sum is σ = 4058623872. Its totient is φ = 676437264.

The previous prime is 1972941917. The next prime is 1972942091. The reversal of 1972942090 is 902492791.

It is not an unprimeable number, because it can be changed into a prime (1972942091) 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, 14092374 + ... + 14092513.

It is an arithmetic number, because the mean of its divisors is an integer number (253663992).

Almost surely, 2^1972942090 is an apocalyptic number.

1972942090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1972942090 is an abundant number, since it is smaller than the sum of its proper divisors (2085681782).

1972942090 is a wasteful number, since it uses less digits than its factorization.

1972942090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28184901.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1972942090 is about 44417.8127556952. The cubic root of 1972942090 is about 1254.2134275319.

The spelling of 1972942090 in words is "one billion, nine hundred seventy-two million, nine hundred forty-two thousand, ninety".