1975142694 has 16 divisors (see below), whose sum is σ = 4514611968. Its totient is φ = 564326472.

The previous prime is 1975142597. The next prime is 1975142713. The reversal of 1975142694 is 4962415791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23513562 + ... + 23513645.

It is an arithmetic number, because the mean of its divisors is an integer number (282163248).

Almost surely, 2^1975142694 is an apocalyptic number.

1975142694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1975142694 is an abundant number, since it is smaller than the sum of its proper divisors (2539469274).

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

1975142694 is a wasteful number, since it uses less digits than its factorization.

1975142694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47027219.

The product of its digits is 544320, while the sum is 48.

The square root of 1975142694 is about 44442.5774905102. The cubic root of 1975142694 is about 1254.6795675104.

The spelling of 1975142694 in words is "one billion, nine hundred seventy-five million, one hundred forty-two thousand, six hundred ninety-four".