1906137970 has 64 divisors (see below), whose sum is σ = 3923821440. Its totient is φ = 660441600.

The previous prime is 1906137941. The next prime is 1906137973. The reversal of 1906137970 is 797316091.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (1906137973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189016 + ... + 198844.

It is an arithmetic number, because the mean of its divisors is an integer number (61309710).

Almost surely, 2^1906137970 is an apocalyptic number.

1906137970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1906137970 is an abundant number, since it is smaller than the sum of its proper divisors (2017683470).

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

1906137970 is a wasteful number, since it uses less digits than its factorization.

1906137970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 1906137970 is about 43659.3400087541. The cubic root of 1906137970 is about 1239.8946255409.

It can be divided in two parts, 1906 and 137970, that added together give a square (139876 = 374²).

The spelling of 1906137970 in words is "one billion, nine hundred six million, one hundred thirty-seven thousand, nine hundred seventy".